Thomas Gleixner | 3e0a4e8 | 2019-05-23 11:14:55 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * NinjaSCSI-32Bi Cardbus, NinjaSCSI-32UDE PCI/CardBus SCSI driver |
| 4 | * Copyright (C) 2001, 2002, 2003 |
| 5 | * YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp> |
| 6 | * GOTO Masanori <gotom@debian.or.jp>, <gotom@debian.org> |
| 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * Revision History: |
| 9 | * 1.0: Initial Release. |
| 10 | * 1.1: Add /proc SDTR status. |
| 11 | * Remove obsolete error handler nsp32_reset. |
| 12 | * Some clean up. |
| 13 | * 1.2: PowerPC (big endian) support. |
| 14 | */ |
| 15 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <linux/module.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/string.h> |
| 20 | #include <linux/timer.h> |
| 21 | #include <linux/ioport.h> |
| 22 | #include <linux/major.h> |
| 23 | #include <linux/blkdev.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/pci.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/ctype.h> |
Matthias Gehre | 910638a | 2006-03-28 01:56:48 -0800 | [diff] [blame] | 28 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | #include <asm/dma.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <asm/io.h> |
| 32 | |
| 33 | #include <scsi/scsi.h> |
| 34 | #include <scsi/scsi_cmnd.h> |
| 35 | #include <scsi/scsi_device.h> |
| 36 | #include <scsi/scsi_host.h> |
| 37 | #include <scsi/scsi_ioctl.h> |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include "nsp32.h" |
| 40 | |
| 41 | |
| 42 | /*********************************************************************** |
| 43 | * Module parameters |
| 44 | */ |
| 45 | static int trans_mode = 0; /* default: BIOS */ |
| 46 | module_param (trans_mode, int, 0); |
| 47 | MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M"); |
| 48 | #define ASYNC_MODE 1 |
| 49 | #define ULTRA20M_MODE 2 |
| 50 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 51 | static bool auto_param = 0; /* default: ON */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | module_param (auto_param, bool, 0); |
| 53 | MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)"); |
| 54 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 55 | static bool disc_priv = 1; /* default: OFF */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | module_param (disc_priv, bool, 0); |
| 57 | MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))"); |
| 58 | |
| 59 | MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>"); |
| 60 | MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module"); |
| 61 | MODULE_LICENSE("GPL"); |
| 62 | |
| 63 | static const char *nsp32_release_version = "1.2"; |
| 64 | |
| 65 | |
| 66 | /**************************************************************************** |
| 67 | * Supported hardware |
| 68 | */ |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 69 | static struct pci_device_id nsp32_pci_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | { |
| 71 | .vendor = PCI_VENDOR_ID_IODATA, |
| 72 | .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II, |
| 73 | .subvendor = PCI_ANY_ID, |
| 74 | .subdevice = PCI_ANY_ID, |
| 75 | .driver_data = MODEL_IODATA, |
| 76 | }, |
| 77 | { |
| 78 | .vendor = PCI_VENDOR_ID_WORKBIT, |
| 79 | .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME, |
| 80 | .subvendor = PCI_ANY_ID, |
| 81 | .subdevice = PCI_ANY_ID, |
| 82 | .driver_data = MODEL_KME, |
| 83 | }, |
| 84 | { |
| 85 | .vendor = PCI_VENDOR_ID_WORKBIT, |
| 86 | .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT, |
| 87 | .subvendor = PCI_ANY_ID, |
| 88 | .subdevice = PCI_ANY_ID, |
| 89 | .driver_data = MODEL_WORKBIT, |
| 90 | }, |
| 91 | { |
| 92 | .vendor = PCI_VENDOR_ID_WORKBIT, |
| 93 | .device = PCI_DEVICE_ID_WORKBIT_STANDARD, |
| 94 | .subvendor = PCI_ANY_ID, |
| 95 | .subdevice = PCI_ANY_ID, |
| 96 | .driver_data = MODEL_PCI_WORKBIT, |
| 97 | }, |
| 98 | { |
| 99 | .vendor = PCI_VENDOR_ID_WORKBIT, |
| 100 | .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC, |
| 101 | .subvendor = PCI_ANY_ID, |
| 102 | .subdevice = PCI_ANY_ID, |
| 103 | .driver_data = MODEL_LOGITEC, |
| 104 | }, |
| 105 | { |
| 106 | .vendor = PCI_VENDOR_ID_WORKBIT, |
| 107 | .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC, |
| 108 | .subvendor = PCI_ANY_ID, |
| 109 | .subdevice = PCI_ANY_ID, |
| 110 | .driver_data = MODEL_PCI_LOGITEC, |
| 111 | }, |
| 112 | { |
| 113 | .vendor = PCI_VENDOR_ID_WORKBIT, |
| 114 | .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO, |
| 115 | .subvendor = PCI_ANY_ID, |
| 116 | .subdevice = PCI_ANY_ID, |
| 117 | .driver_data = MODEL_PCI_MELCO, |
| 118 | }, |
| 119 | { |
| 120 | .vendor = PCI_VENDOR_ID_WORKBIT, |
| 121 | .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II, |
| 122 | .subvendor = PCI_ANY_ID, |
| 123 | .subdevice = PCI_ANY_ID, |
| 124 | .driver_data = MODEL_PCI_MELCO, |
| 125 | }, |
| 126 | {0,0,}, |
| 127 | }; |
| 128 | MODULE_DEVICE_TABLE(pci, nsp32_pci_table); |
| 129 | |
| 130 | static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */ |
| 131 | |
| 132 | |
| 133 | /* |
| 134 | * Period/AckWidth speed conversion table |
| 135 | * |
| 136 | * Note: This period/ackwidth speed table must be in descending order. |
| 137 | */ |
| 138 | static nsp32_sync_table nsp32_sync_table_40M[] = { |
| 139 | /* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */ |
| 140 | {0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */ |
| 141 | {0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */ |
| 142 | {0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */ |
| 143 | {0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */ |
| 144 | {0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */ |
| 145 | {0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */ |
| 146 | {0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */ |
| 147 | {0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */ |
| 148 | {0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */ |
| 149 | }; |
| 150 | |
| 151 | static nsp32_sync_table nsp32_sync_table_20M[] = { |
| 152 | {0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */ |
| 153 | {0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */ |
| 154 | {0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */ |
| 155 | {0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */ |
| 156 | {0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */ |
| 157 | {0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */ |
| 158 | {0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */ |
| 159 | {0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */ |
| 160 | {0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */ |
| 161 | }; |
| 162 | |
| 163 | static nsp32_sync_table nsp32_sync_table_pci[] = { |
| 164 | {0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */ |
| 165 | {0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */ |
| 166 | {0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */ |
| 167 | {0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */ |
| 168 | {0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */ |
| 169 | {0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */ |
| 170 | {0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */ |
| 171 | {0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */ |
| 172 | {0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */ |
| 173 | }; |
| 174 | |
| 175 | /* |
| 176 | * function declaration |
| 177 | */ |
| 178 | /* module entry point */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 179 | static int nsp32_probe (struct pci_dev *, const struct pci_device_id *); |
| 180 | static void nsp32_remove(struct pci_dev *); |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 181 | static int __init init_nsp32 (void); |
| 182 | static void __exit exit_nsp32 (void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 184 | /* struct struct scsi_host_template */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 185 | static int nsp32_show_info (struct seq_file *, struct Scsi_Host *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 187 | static int nsp32_detect (struct pci_dev *pdev); |
| 188 | static int nsp32_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); |
| 189 | static const char *nsp32_info (struct Scsi_Host *); |
| 190 | static int nsp32_release (struct Scsi_Host *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
| 192 | /* SCSI error handler */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 193 | static int nsp32_eh_abort (struct scsi_cmnd *); |
| 194 | static int nsp32_eh_host_reset(struct scsi_cmnd *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
| 196 | /* generate SCSI message */ |
| 197 | static void nsp32_build_identify(struct scsi_cmnd *); |
| 198 | static void nsp32_build_nop (struct scsi_cmnd *); |
| 199 | static void nsp32_build_reject (struct scsi_cmnd *); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 200 | static void nsp32_build_sdtr (struct scsi_cmnd *, unsigned char, |
| 201 | unsigned char); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | |
| 203 | /* SCSI message handler */ |
| 204 | static int nsp32_busfree_occur(struct scsi_cmnd *, unsigned short); |
| 205 | static void nsp32_msgout_occur (struct scsi_cmnd *); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 206 | static void nsp32_msgin_occur (struct scsi_cmnd *, unsigned long, |
| 207 | unsigned short); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
| 209 | static int nsp32_setup_sg_table (struct scsi_cmnd *); |
| 210 | static int nsp32_selection_autopara(struct scsi_cmnd *); |
| 211 | static int nsp32_selection_autoscsi(struct scsi_cmnd *); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 212 | static void nsp32_scsi_done (struct scsi_cmnd *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | static int nsp32_arbitration (struct scsi_cmnd *, unsigned int); |
| 214 | static int nsp32_reselection (struct scsi_cmnd *, unsigned char); |
| 215 | static void nsp32_adjust_busfree (struct scsi_cmnd *, unsigned int); |
| 216 | static void nsp32_restart_autoscsi (struct scsi_cmnd *, unsigned short); |
| 217 | |
| 218 | /* SCSI SDTR */ |
| 219 | static void nsp32_analyze_sdtr (struct scsi_cmnd *); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 220 | static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, |
| 221 | unsigned char); |
| 222 | static void nsp32_set_async (nsp32_hw_data *, nsp32_target *); |
| 223 | static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *, |
| 224 | unsigned char *, unsigned char *); |
| 225 | static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *, |
| 226 | int, unsigned char); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
| 228 | /* SCSI bus status handler */ |
| 229 | static void nsp32_wait_req (nsp32_hw_data *, int); |
| 230 | static void nsp32_wait_sack (nsp32_hw_data *, int); |
| 231 | static void nsp32_sack_assert (nsp32_hw_data *); |
| 232 | static void nsp32_sack_negate (nsp32_hw_data *); |
| 233 | static void nsp32_do_bus_reset(nsp32_hw_data *); |
| 234 | |
| 235 | /* hardware interrupt handler */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 236 | static irqreturn_t do_nsp32_isr(int, void *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | /* initialize hardware */ |
| 239 | static int nsp32hw_init(nsp32_hw_data *); |
| 240 | |
| 241 | /* EEPROM handler */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 242 | static int nsp32_getprom_param (nsp32_hw_data *); |
| 243 | static int nsp32_getprom_at24 (nsp32_hw_data *); |
| 244 | static int nsp32_getprom_c16 (nsp32_hw_data *); |
| 245 | static void nsp32_prom_start (nsp32_hw_data *); |
| 246 | static void nsp32_prom_stop (nsp32_hw_data *); |
| 247 | static int nsp32_prom_read (nsp32_hw_data *, int); |
| 248 | static int nsp32_prom_read_bit (nsp32_hw_data *); |
| 249 | static void nsp32_prom_write_bit(nsp32_hw_data *, int); |
| 250 | static void nsp32_prom_set (nsp32_hw_data *, int, int); |
| 251 | static int nsp32_prom_get (nsp32_hw_data *, int); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
| 253 | /* debug/warning/info message */ |
| 254 | static void nsp32_message (const char *, int, char *, char *, ...); |
| 255 | #ifdef NSP32_DEBUG |
| 256 | static void nsp32_dmessage(const char *, int, int, char *, ...); |
| 257 | #endif |
| 258 | |
| 259 | /* |
| 260 | * max_sectors is currently limited up to 128. |
| 261 | */ |
| 262 | static struct scsi_host_template nsp32_template = { |
| 263 | .proc_name = "nsp32", |
| 264 | .name = "Workbit NinjaSCSI-32Bi/UDE", |
Al Viro | 35c6e0e | 2013-03-31 02:11:39 -0400 | [diff] [blame] | 265 | .show_info = nsp32_show_info, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | .info = nsp32_info, |
| 267 | .queuecommand = nsp32_queuecommand, |
| 268 | .can_queue = 1, |
| 269 | .sg_tablesize = NSP32_SG_SIZE, |
| 270 | .max_sectors = 128, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | .this_id = NSP32_HOST_SCSIID, |
Christoph Hellwig | 4af14d1 | 2018-12-13 16:17:09 +0100 | [diff] [blame] | 272 | .dma_boundary = PAGE_SIZE - 1, |
Hannes Reinecke | 71b2e66 | 2017-08-25 13:57:15 +0200 | [diff] [blame] | 273 | .eh_abort_handler = nsp32_eh_abort, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | .eh_host_reset_handler = nsp32_eh_host_reset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | /* .highmem_io = 1, */ |
Bart Van Assche | 195771c | 2022-02-18 11:51:05 -0800 | [diff] [blame] | 276 | .cmd_size = sizeof(struct nsp32_cmd_priv), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | }; |
| 278 | |
| 279 | #include "nsp32_io.h" |
| 280 | |
| 281 | /*********************************************************************** |
| 282 | * debug, error print |
| 283 | */ |
| 284 | #ifndef NSP32_DEBUG |
| 285 | # define NSP32_DEBUG_MASK 0x000000 |
| 286 | # define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args) |
| 287 | # define nsp32_dbg(mask, args...) /* */ |
| 288 | #else |
| 289 | # define NSP32_DEBUG_MASK 0xffffff |
| 290 | # define nsp32_msg(type, args...) \ |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 291 | nsp32_message (__func__, __LINE__, (type), args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | # define nsp32_dbg(mask, args...) \ |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 293 | nsp32_dmessage(__func__, __LINE__, (mask), args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | #endif |
| 295 | |
| 296 | #define NSP32_DEBUG_QUEUECOMMAND BIT(0) |
| 297 | #define NSP32_DEBUG_REGISTER BIT(1) |
| 298 | #define NSP32_DEBUG_AUTOSCSI BIT(2) |
| 299 | #define NSP32_DEBUG_INTR BIT(3) |
| 300 | #define NSP32_DEBUG_SGLIST BIT(4) |
| 301 | #define NSP32_DEBUG_BUSFREE BIT(5) |
| 302 | #define NSP32_DEBUG_CDB_CONTENTS BIT(6) |
| 303 | #define NSP32_DEBUG_RESELECTION BIT(7) |
| 304 | #define NSP32_DEBUG_MSGINOCCUR BIT(8) |
| 305 | #define NSP32_DEBUG_EEPROM BIT(9) |
| 306 | #define NSP32_DEBUG_MSGOUTOCCUR BIT(10) |
| 307 | #define NSP32_DEBUG_BUSRESET BIT(11) |
| 308 | #define NSP32_DEBUG_RESTART BIT(12) |
| 309 | #define NSP32_DEBUG_SYNC BIT(13) |
| 310 | #define NSP32_DEBUG_WAIT BIT(14) |
| 311 | #define NSP32_DEBUG_TARGETFLAG BIT(15) |
| 312 | #define NSP32_DEBUG_PROC BIT(16) |
| 313 | #define NSP32_DEBUG_INIT BIT(17) |
| 314 | #define NSP32_SPECIAL_PRINT_REGISTER BIT(20) |
| 315 | |
| 316 | #define NSP32_DEBUG_BUF_LEN 100 |
| 317 | |
Lee Jones | 6673077 | 2021-03-17 09:11:19 +0000 | [diff] [blame] | 318 | __printf(4, 5) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | static void nsp32_message(const char *func, int line, char *type, char *fmt, ...) |
| 320 | { |
| 321 | va_list args; |
| 322 | char buf[NSP32_DEBUG_BUF_LEN]; |
| 323 | |
| 324 | va_start(args, fmt); |
| 325 | vsnprintf(buf, sizeof(buf), fmt, args); |
| 326 | va_end(args); |
| 327 | |
| 328 | #ifndef NSP32_DEBUG |
| 329 | printk("%snsp32: %s\n", type, buf); |
| 330 | #else |
| 331 | printk("%snsp32: %s (%d): %s\n", type, func, line, buf); |
| 332 | #endif |
| 333 | } |
| 334 | |
| 335 | #ifdef NSP32_DEBUG |
| 336 | static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...) |
| 337 | { |
| 338 | va_list args; |
| 339 | char buf[NSP32_DEBUG_BUF_LEN]; |
| 340 | |
| 341 | va_start(args, fmt); |
| 342 | vsnprintf(buf, sizeof(buf), fmt, args); |
| 343 | va_end(args); |
| 344 | |
| 345 | if (mask & NSP32_DEBUG_MASK) { |
| 346 | printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf); |
| 347 | } |
| 348 | } |
| 349 | #endif |
| 350 | |
| 351 | #ifdef NSP32_DEBUG |
| 352 | # include "nsp32_debug.c" |
| 353 | #else |
| 354 | # define show_command(arg) /* */ |
| 355 | # define show_busphase(arg) /* */ |
| 356 | # define show_autophase(arg) /* */ |
| 357 | #endif |
| 358 | |
| 359 | /* |
| 360 | * IDENTIFY Message |
| 361 | */ |
| 362 | static void nsp32_build_identify(struct scsi_cmnd *SCpnt) |
| 363 | { |
| 364 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 365 | int pos = data->msgout_len; |
| 366 | int mode = FALSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
| 368 | /* XXX: Auto DiscPriv detection is progressing... */ |
| 369 | if (disc_priv == 0) { |
| 370 | /* mode = TRUE; */ |
| 371 | } |
| 372 | |
| 373 | data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++; |
| 374 | |
| 375 | data->msgout_len = pos; |
| 376 | } |
| 377 | |
| 378 | /* |
| 379 | * SDTR Message Routine |
| 380 | */ |
| 381 | static void nsp32_build_sdtr(struct scsi_cmnd *SCpnt, |
| 382 | unsigned char period, |
| 383 | unsigned char offset) |
| 384 | { |
| 385 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 386 | int pos = data->msgout_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
| 388 | data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++; |
| 389 | data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++; |
| 390 | data->msgoutbuf[pos] = EXTENDED_SDTR; pos++; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 391 | data->msgoutbuf[pos] = period; pos++; |
| 392 | data->msgoutbuf[pos] = offset; pos++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | |
| 394 | data->msgout_len = pos; |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * No Operation Message |
| 399 | */ |
| 400 | static void nsp32_build_nop(struct scsi_cmnd *SCpnt) |
| 401 | { |
| 402 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 403 | int pos = data->msgout_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
| 405 | if (pos != 0) { |
| 406 | nsp32_msg(KERN_WARNING, |
| 407 | "Some messages are already contained!"); |
| 408 | return; |
| 409 | } |
| 410 | |
| 411 | data->msgoutbuf[pos] = NOP; pos++; |
| 412 | data->msgout_len = pos; |
| 413 | } |
| 414 | |
| 415 | /* |
| 416 | * Reject Message |
| 417 | */ |
| 418 | static void nsp32_build_reject(struct scsi_cmnd *SCpnt) |
| 419 | { |
| 420 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 421 | int pos = data->msgout_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
| 423 | data->msgoutbuf[pos] = MESSAGE_REJECT; pos++; |
| 424 | data->msgout_len = pos; |
| 425 | } |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | /* |
| 428 | * timer |
| 429 | */ |
| 430 | #if 0 |
| 431 | static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time) |
| 432 | { |
| 433 | unsigned int base = SCpnt->host->io_port; |
| 434 | |
| 435 | nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time); |
| 436 | |
| 437 | if (time & (~TIMER_CNT_MASK)) { |
| 438 | nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow"); |
| 439 | } |
| 440 | |
| 441 | nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK); |
| 442 | } |
| 443 | #endif |
| 444 | |
| 445 | |
| 446 | /* |
| 447 | * set SCSI command and other parameter to asic, and start selection phase |
| 448 | */ |
| 449 | static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt) |
| 450 | { |
| 451 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 452 | unsigned int base = SCpnt->device->host->io_port; |
| 453 | unsigned int host_id = SCpnt->device->host->this_id; |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 454 | unsigned char target = scmd_id(SCpnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | nsp32_autoparam *param = data->autoparam; |
| 456 | unsigned char phase; |
| 457 | int i, ret; |
| 458 | unsigned int msgout; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 459 | u16_le s; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
| 461 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in"); |
| 462 | |
| 463 | /* |
| 464 | * check bus free |
| 465 | */ |
| 466 | phase = nsp32_read1(base, SCSI_BUS_MONITOR); |
| 467 | if (phase != BUSMON_BUS_FREE) { |
| 468 | nsp32_msg(KERN_WARNING, "bus busy"); |
| 469 | show_busphase(phase & BUSMON_PHASE_MASK); |
| 470 | SCpnt->result = DID_BUS_BUSY << 16; |
| 471 | return FALSE; |
| 472 | } |
| 473 | |
| 474 | /* |
| 475 | * message out |
| 476 | * |
| 477 | * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout. |
| 478 | * over 3 messages needs another routine. |
| 479 | */ |
| 480 | if (data->msgout_len == 0) { |
| 481 | nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!"); |
| 482 | SCpnt->result = DID_ERROR << 16; |
| 483 | return FALSE; |
| 484 | } else if (data->msgout_len > 0 && data->msgout_len <= 3) { |
| 485 | msgout = 0; |
| 486 | for (i = 0; i < data->msgout_len; i++) { |
| 487 | /* |
| 488 | * the sending order of the message is: |
| 489 | * MCNT 3: MSG#0 -> MSG#1 -> MSG#2 |
| 490 | * MCNT 2: MSG#1 -> MSG#2 |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 491 | * MCNT 1: MSG#2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | */ |
| 493 | msgout >>= 8; |
| 494 | msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24); |
| 495 | } |
| 496 | msgout |= MV_VALID; /* MV valid */ |
| 497 | msgout |= (unsigned int)data->msgout_len; /* len */ |
| 498 | } else { |
| 499 | /* data->msgout_len > 3 */ |
| 500 | msgout = 0; |
| 501 | } |
| 502 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 503 | // nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", |
| 504 | // nsp32_read2(base, SEL_TIME_OUT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | // nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); |
| 506 | |
| 507 | /* |
| 508 | * setup asic parameter |
| 509 | */ |
| 510 | memset(param, 0, sizeof(nsp32_autoparam)); |
| 511 | |
| 512 | /* cdb */ |
| 513 | for (i = 0; i < SCpnt->cmd_len; i++) { |
| 514 | param->cdb[4 * i] = SCpnt->cmnd[i]; |
| 515 | } |
| 516 | |
| 517 | /* outgoing messages */ |
| 518 | param->msgout = cpu_to_le32(msgout); |
| 519 | |
| 520 | /* syncreg, ackwidth, target id, SREQ sampling rate */ |
| 521 | param->syncreg = data->cur_target->syncreg; |
| 522 | param->ackwidth = data->cur_target->ackwidth; |
| 523 | param->target_id = BIT(host_id) | BIT(target); |
| 524 | param->sample_reg = data->cur_target->sample_reg; |
| 525 | |
| 526 | // nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg); |
| 527 | |
| 528 | /* command control */ |
| 529 | param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 530 | AUTOSCSI_START | |
| 531 | AUTO_MSGIN_00_OR_04 | |
| 532 | AUTO_MSGIN_02 | |
| 533 | AUTO_ATN ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | |
| 536 | /* transfer control */ |
| 537 | s = 0; |
| 538 | switch (data->trans_method) { |
| 539 | case NSP32_TRANSFER_BUSMASTER: |
| 540 | s |= BM_START; |
| 541 | break; |
| 542 | case NSP32_TRANSFER_MMIO: |
| 543 | s |= CB_MMIO_MODE; |
| 544 | break; |
| 545 | case NSP32_TRANSFER_PIO: |
| 546 | s |= CB_IO_MODE; |
| 547 | break; |
| 548 | default: |
| 549 | nsp32_msg(KERN_ERR, "unknown trans_method"); |
| 550 | break; |
| 551 | } |
| 552 | /* |
| 553 | * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits. |
| 554 | * For bus master transfer, it's taken off. |
| 555 | */ |
| 556 | s |= (TRANSFER_GO | ALL_COUNTER_CLR); |
| 557 | param->transfer_control = cpu_to_le16(s); |
| 558 | |
| 559 | /* sg table addr */ |
| 560 | param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr); |
| 561 | |
| 562 | /* |
| 563 | * transfer parameter to ASIC |
| 564 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 565 | nsp32_write4(base, SGT_ADR, data->auto_paddr); |
| 566 | nsp32_write2(base, COMMAND_CONTROL, |
| 567 | CLEAR_CDB_FIFO_POINTER | AUTO_PARAMETER ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | |
| 569 | /* |
| 570 | * Check arbitration |
| 571 | */ |
| 572 | ret = nsp32_arbitration(SCpnt, base); |
| 573 | |
| 574 | return ret; |
| 575 | } |
| 576 | |
| 577 | |
| 578 | /* |
| 579 | * Selection with AUTO SCSI (without AUTO PARAMETER) |
| 580 | */ |
| 581 | static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt) |
| 582 | { |
| 583 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 584 | unsigned int base = SCpnt->device->host->io_port; |
| 585 | unsigned int host_id = SCpnt->device->host->this_id; |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 586 | unsigned char target = scmd_id(SCpnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | unsigned char phase; |
| 588 | int status; |
| 589 | unsigned short command = 0; |
| 590 | unsigned int msgout = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | int i; |
| 592 | |
| 593 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in"); |
| 594 | |
| 595 | /* |
| 596 | * IRQ disable |
| 597 | */ |
| 598 | nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); |
| 599 | |
| 600 | /* |
| 601 | * check bus line |
| 602 | */ |
| 603 | phase = nsp32_read1(base, SCSI_BUS_MONITOR); |
Arnd Bergmann | 287f796 | 2017-09-05 09:51:29 +0200 | [diff] [blame] | 604 | if ((phase & BUSMON_BSY) || (phase & BUSMON_SEL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | nsp32_msg(KERN_WARNING, "bus busy"); |
| 606 | SCpnt->result = DID_BUS_BUSY << 16; |
| 607 | status = 1; |
| 608 | goto out; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 609 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | /* |
| 612 | * clear execph |
| 613 | */ |
Lee Jones | 94685e7 | 2021-03-17 09:11:20 +0000 | [diff] [blame] | 614 | nsp32_read2(base, SCSI_EXECUTE_PHASE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
| 616 | /* |
| 617 | * clear FIFO counter to set CDBs |
| 618 | */ |
| 619 | nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER); |
| 620 | |
| 621 | /* |
| 622 | * set CDB0 - CDB15 |
| 623 | */ |
| 624 | for (i = 0; i < SCpnt->cmd_len; i++) { |
| 625 | nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 626 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]); |
| 628 | |
| 629 | /* |
| 630 | * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID |
| 631 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 632 | nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, |
| 633 | BIT(host_id) | BIT(target)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
| 635 | /* |
| 636 | * set SCSI MSGOUT REG |
| 637 | * |
| 638 | * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout. |
| 639 | * over 3 messages needs another routine. |
| 640 | */ |
| 641 | if (data->msgout_len == 0) { |
| 642 | nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!"); |
| 643 | SCpnt->result = DID_ERROR << 16; |
| 644 | status = 1; |
| 645 | goto out; |
| 646 | } else if (data->msgout_len > 0 && data->msgout_len <= 3) { |
| 647 | msgout = 0; |
| 648 | for (i = 0; i < data->msgout_len; i++) { |
| 649 | /* |
| 650 | * the sending order of the message is: |
| 651 | * MCNT 3: MSG#0 -> MSG#1 -> MSG#2 |
| 652 | * MCNT 2: MSG#1 -> MSG#2 |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 653 | * MCNT 1: MSG#2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | */ |
| 655 | msgout >>= 8; |
| 656 | msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24); |
| 657 | } |
| 658 | msgout |= MV_VALID; /* MV valid */ |
| 659 | msgout |= (unsigned int)data->msgout_len; /* len */ |
| 660 | nsp32_write4(base, SCSI_MSG_OUT, msgout); |
| 661 | } else { |
| 662 | /* data->msgout_len > 3 */ |
| 663 | nsp32_write4(base, SCSI_MSG_OUT, 0); |
| 664 | } |
| 665 | |
| 666 | /* |
| 667 | * set selection timeout(= 250ms) |
| 668 | */ |
| 669 | nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); |
| 670 | |
| 671 | /* |
| 672 | * set SREQ hazard killer sampling rate |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 673 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz. |
| 675 | * check other internal clock! |
| 676 | */ |
| 677 | nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg); |
| 678 | |
| 679 | /* |
| 680 | * clear Arbit |
| 681 | */ |
| 682 | nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR); |
| 683 | |
| 684 | /* |
| 685 | * set SYNCREG |
| 686 | * Don't set BM_START_ADR before setting this register. |
| 687 | */ |
| 688 | nsp32_write1(base, SYNC_REG, data->cur_target->syncreg); |
| 689 | |
| 690 | /* |
| 691 | * set ACKWIDTH |
| 692 | */ |
| 693 | nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth); |
| 694 | |
| 695 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, |
| 696 | "syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x", |
| 697 | nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH), |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 698 | nsp32_read4(base, SGT_ADR), |
| 699 | nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x", |
| 701 | data->msgout_len, msgout); |
| 702 | |
| 703 | /* |
| 704 | * set SGT ADDR (physical address) |
| 705 | */ |
| 706 | nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr); |
| 707 | |
| 708 | /* |
| 709 | * set TRANSFER CONTROL REG |
| 710 | */ |
| 711 | command = 0; |
| 712 | command |= (TRANSFER_GO | ALL_COUNTER_CLR); |
| 713 | if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 714 | if (scsi_bufflen(SCpnt) > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | command |= BM_START; |
| 716 | } |
| 717 | } else if (data->trans_method & NSP32_TRANSFER_MMIO) { |
| 718 | command |= CB_MMIO_MODE; |
| 719 | } else if (data->trans_method & NSP32_TRANSFER_PIO) { |
| 720 | command |= CB_IO_MODE; |
| 721 | } |
| 722 | nsp32_write2(base, TRANSFER_CONTROL, command); |
| 723 | |
| 724 | /* |
| 725 | * start AUTO SCSI, kick off arbitration |
| 726 | */ |
| 727 | command = (CLEAR_CDB_FIFO_POINTER | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 728 | AUTOSCSI_START | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | AUTO_MSGIN_00_OR_04 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 730 | AUTO_MSGIN_02 | |
| 731 | AUTO_ATN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | nsp32_write2(base, COMMAND_CONTROL, command); |
| 733 | |
| 734 | /* |
| 735 | * Check arbitration |
| 736 | */ |
| 737 | status = nsp32_arbitration(SCpnt, base); |
| 738 | |
| 739 | out: |
| 740 | /* |
| 741 | * IRQ enable |
| 742 | */ |
| 743 | nsp32_write2(base, IRQ_CONTROL, 0); |
| 744 | |
| 745 | return status; |
| 746 | } |
| 747 | |
| 748 | |
| 749 | /* |
| 750 | * Arbitration Status Check |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 751 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | * Note: Arbitration counter is waited during ARBIT_GO is not lifting. |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 753 | * Using udelay(1) consumes CPU time and system time, but |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | * arbitration delay time is defined minimal 2.4us in SCSI |
| 755 | * specification, thus udelay works as coarse grained wait timer. |
| 756 | */ |
| 757 | static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base) |
| 758 | { |
| 759 | unsigned char arbit; |
| 760 | int status = TRUE; |
| 761 | int time = 0; |
| 762 | |
| 763 | do { |
| 764 | arbit = nsp32_read1(base, ARBIT_STATUS); |
| 765 | time++; |
| 766 | } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 && |
| 767 | (time <= ARBIT_TIMEOUT_TIME)); |
| 768 | |
| 769 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, |
| 770 | "arbit: 0x%x, delay time: %d", arbit, time); |
| 771 | |
| 772 | if (arbit & ARBIT_WIN) { |
| 773 | /* Arbitration succeeded */ |
| 774 | SCpnt->result = DID_OK << 16; |
| 775 | nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */ |
| 776 | } else if (arbit & ARBIT_FAIL) { |
| 777 | /* Arbitration failed */ |
| 778 | SCpnt->result = DID_BUS_BUSY << 16; |
| 779 | status = FALSE; |
| 780 | } else { |
| 781 | /* |
| 782 | * unknown error or ARBIT_GO timeout, |
| 783 | * something lock up! guess no connection. |
| 784 | */ |
| 785 | nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout"); |
| 786 | SCpnt->result = DID_NO_CONNECT << 16; |
| 787 | status = FALSE; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 788 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | |
| 790 | /* |
| 791 | * clear Arbit |
| 792 | */ |
| 793 | nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR); |
| 794 | |
| 795 | return status; |
| 796 | } |
| 797 | |
| 798 | |
| 799 | /* |
| 800 | * reselection |
| 801 | * |
| 802 | * Note: This reselection routine is called from msgin_occur, |
| 803 | * reselection target id&lun must be already set. |
| 804 | * SCSI-2 says IDENTIFY implies RESTORE_POINTER operation. |
| 805 | */ |
| 806 | static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun) |
| 807 | { |
| 808 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 809 | unsigned int host_id = SCpnt->device->host->this_id; |
| 810 | unsigned int base = SCpnt->device->host->io_port; |
| 811 | unsigned char tmpid, newid; |
| 812 | |
| 813 | nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter"); |
| 814 | |
| 815 | /* |
| 816 | * calculate reselected SCSI ID |
| 817 | */ |
| 818 | tmpid = nsp32_read1(base, RESELECT_ID); |
| 819 | tmpid &= (~BIT(host_id)); |
| 820 | newid = 0; |
| 821 | while (tmpid) { |
| 822 | if (tmpid & 1) { |
| 823 | break; |
| 824 | } |
| 825 | tmpid >>= 1; |
| 826 | newid++; |
| 827 | } |
| 828 | |
| 829 | /* |
| 830 | * If reselected New ID:LUN is not existed |
| 831 | * or current nexus is not existed, unexpected |
| 832 | * reselection is occurred. Send reject message. |
| 833 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 834 | if (newid >= ARRAY_SIZE(data->lunt) || |
| 835 | newlun >= ARRAY_SIZE(data->lunt[0])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | nsp32_msg(KERN_WARNING, "unknown id/lun"); |
| 837 | return FALSE; |
| 838 | } else if(data->lunt[newid][newlun].SCpnt == NULL) { |
| 839 | nsp32_msg(KERN_WARNING, "no SCSI command is processing"); |
| 840 | return FALSE; |
| 841 | } |
| 842 | |
| 843 | data->cur_id = newid; |
| 844 | data->cur_lun = newlun; |
| 845 | data->cur_target = &(data->target[newid]); |
| 846 | data->cur_lunt = &(data->lunt[newid][newlun]); |
| 847 | |
| 848 | /* reset SACK/SavedACK counter (or ALL clear?) */ |
| 849 | nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); |
| 850 | |
| 851 | return TRUE; |
| 852 | } |
| 853 | |
| 854 | |
| 855 | /* |
| 856 | * nsp32_setup_sg_table - build scatter gather list for transfer data |
| 857 | * with bus master. |
| 858 | * |
| 859 | * Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time. |
| 860 | */ |
| 861 | static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt) |
| 862 | { |
| 863 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 864 | struct scatterlist *sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt; |
| 866 | int num, i; |
| 867 | u32_le l; |
| 868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | if (sgt == NULL) { |
| 870 | nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null"); |
| 871 | return FALSE; |
| 872 | } |
| 873 | |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 874 | num = scsi_dma_map(SCpnt); |
| 875 | if (!num) |
| 876 | return TRUE; |
| 877 | else if (num < 0) |
| 878 | return FALSE; |
| 879 | else { |
| 880 | scsi_for_each_sg(SCpnt, sg, num, i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | /* |
| 882 | * Build nsp32_sglist, substitute sg dma addresses. |
| 883 | */ |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 884 | sgt[i].addr = cpu_to_le32(sg_dma_address(sg)); |
| 885 | sgt[i].len = cpu_to_le32(sg_dma_len(sg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | |
| 887 | if (le32_to_cpu(sgt[i].len) > 0x10000) { |
| 888 | nsp32_msg(KERN_ERR, |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 889 | "can't transfer over 64KB at a time, " |
| 890 | "size=0x%x", le32_to_cpu(sgt[i].len)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | return FALSE; |
| 892 | } |
| 893 | nsp32_dbg(NSP32_DEBUG_SGLIST, |
| 894 | "num 0x%x : addr 0x%lx len 0x%lx", |
| 895 | i, |
| 896 | le32_to_cpu(sgt[i].addr), |
| 897 | le32_to_cpu(sgt[i].len )); |
| 898 | } |
| 899 | |
| 900 | /* set end mark */ |
| 901 | l = le32_to_cpu(sgt[num-1].len); |
| 902 | sgt[num-1].len = cpu_to_le32(l | SGTEND); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | } |
| 904 | |
| 905 | return TRUE; |
| 906 | } |
| 907 | |
Bart Van Assche | af049df | 2021-10-07 13:46:14 -0700 | [diff] [blame] | 908 | static int nsp32_queuecommand_lck(struct scsi_cmnd *SCpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | { |
Bart Van Assche | af049df | 2021-10-07 13:46:14 -0700 | [diff] [blame] | 910 | void (*done)(struct scsi_cmnd *) = scsi_done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 912 | nsp32_target *target; |
| 913 | nsp32_lunt *cur_lunt; |
| 914 | int ret; |
| 915 | |
| 916 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, |
Hans Wennborg | fc38504 | 2014-08-05 21:43:29 -0700 | [diff] [blame] | 917 | "enter. target: 0x%x LUN: 0x%llx cmnd: 0x%x cmndlen: 0x%x " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x", |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 919 | SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], |
| 920 | SCpnt->cmd_len, scsi_sg_count(SCpnt), scsi_sglist(SCpnt), |
| 921 | scsi_bufflen(SCpnt)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | |
| 923 | if (data->CurrentSC != NULL) { |
| 924 | nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request"); |
| 925 | data->CurrentSC = NULL; |
| 926 | SCpnt->result = DID_NO_CONNECT << 16; |
| 927 | done(SCpnt); |
| 928 | return 0; |
| 929 | } |
| 930 | |
| 931 | /* check target ID is not same as this initiator ID */ |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 932 | if (scmd_id(SCpnt) == SCpnt->device->host->this_id) { |
Masanari Iida | 9b13494 | 2014-08-06 22:31:28 +0900 | [diff] [blame] | 933 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "target==host???"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | SCpnt->result = DID_BAD_TARGET << 16; |
| 935 | done(SCpnt); |
| 936 | return 0; |
| 937 | } |
| 938 | |
| 939 | /* check target LUN is allowable value */ |
| 940 | if (SCpnt->device->lun >= MAX_LUN) { |
| 941 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun"); |
| 942 | SCpnt->result = DID_BAD_TARGET << 16; |
| 943 | done(SCpnt); |
| 944 | return 0; |
| 945 | } |
| 946 | |
| 947 | show_command(SCpnt); |
| 948 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | data->CurrentSC = SCpnt; |
Bart Van Assche | 195771c | 2022-02-18 11:51:05 -0800 | [diff] [blame] | 950 | nsp32_priv(SCpnt)->status = SAM_STAT_CHECK_CONDITION; |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 951 | scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | /* initialize data */ |
| 954 | data->msgout_len = 0; |
| 955 | data->msgin_len = 0; |
| 956 | cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]); |
| 957 | cur_lunt->SCpnt = SCpnt; |
| 958 | cur_lunt->save_datp = 0; |
| 959 | cur_lunt->msgin03 = FALSE; |
| 960 | data->cur_lunt = cur_lunt; |
| 961 | data->cur_id = SCpnt->device->id; |
| 962 | data->cur_lun = SCpnt->device->lun; |
| 963 | |
| 964 | ret = nsp32_setup_sg_table(SCpnt); |
| 965 | if (ret == FALSE) { |
| 966 | nsp32_msg(KERN_ERR, "SGT fail"); |
| 967 | SCpnt->result = DID_ERROR << 16; |
| 968 | nsp32_scsi_done(SCpnt); |
| 969 | return 0; |
| 970 | } |
| 971 | |
| 972 | /* Build IDENTIFY */ |
| 973 | nsp32_build_identify(SCpnt); |
| 974 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 975 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | * If target is the first time to transfer after the reset |
| 977 | * (target don't have SDTR_DONE and SDTR_INITIATOR), sync |
| 978 | * message SDTR is needed to do synchronous transfer. |
| 979 | */ |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 980 | target = &data->target[scmd_id(SCpnt)]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | data->cur_target = target; |
| 982 | |
| 983 | if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) { |
| 984 | unsigned char period, offset; |
| 985 | |
| 986 | if (trans_mode != ASYNC_MODE) { |
| 987 | nsp32_set_max_sync(data, target, &period, &offset); |
| 988 | nsp32_build_sdtr(SCpnt, period, offset); |
| 989 | target->sync_flag |= SDTR_INITIATOR; |
| 990 | } else { |
| 991 | nsp32_set_async(data, target); |
| 992 | target->sync_flag |= SDTR_DONE; |
| 993 | } |
| 994 | |
| 995 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, |
| 996 | "SDTR: entry: %d start_period: 0x%x offset: 0x%x\n", |
| 997 | target->limit_entry, period, offset); |
| 998 | } else if (target->sync_flag & SDTR_INITIATOR) { |
| 999 | /* |
| 1000 | * It was negotiating SDTR with target, sending from the |
| 1001 | * initiator, but there are no chance to remove this flag. |
| 1002 | * Set async because we don't get proper negotiation. |
| 1003 | */ |
| 1004 | nsp32_set_async(data, target); |
| 1005 | target->sync_flag &= ~SDTR_INITIATOR; |
| 1006 | target->sync_flag |= SDTR_DONE; |
| 1007 | |
| 1008 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, |
| 1009 | "SDTR_INITIATOR: fall back to async"); |
| 1010 | } else if (target->sync_flag & SDTR_TARGET) { |
| 1011 | /* |
| 1012 | * It was negotiating SDTR with target, sending from target, |
| 1013 | * but there are no chance to remove this flag. Set async |
| 1014 | * because we don't get proper negotiation. |
| 1015 | */ |
| 1016 | nsp32_set_async(data, target); |
| 1017 | target->sync_flag &= ~SDTR_TARGET; |
| 1018 | target->sync_flag |= SDTR_DONE; |
| 1019 | |
| 1020 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, |
| 1021 | "Unknown SDTR from target is reached, fall back to async."); |
| 1022 | } |
| 1023 | |
| 1024 | nsp32_dbg(NSP32_DEBUG_TARGETFLAG, |
| 1025 | "target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x", |
| 1026 | SCpnt->device->id, target->sync_flag, target->syncreg, |
| 1027 | target->ackwidth); |
| 1028 | |
| 1029 | /* Selection */ |
| 1030 | if (auto_param == 0) { |
| 1031 | ret = nsp32_selection_autopara(SCpnt); |
| 1032 | } else { |
| 1033 | ret = nsp32_selection_autoscsi(SCpnt); |
| 1034 | } |
| 1035 | |
| 1036 | if (ret != TRUE) { |
| 1037 | nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail"); |
| 1038 | nsp32_scsi_done(SCpnt); |
| 1039 | } |
| 1040 | |
| 1041 | return 0; |
| 1042 | } |
| 1043 | |
Jeff Garzik | f281233 | 2010-11-16 02:10:29 -0500 | [diff] [blame] | 1044 | static DEF_SCSI_QCMD(nsp32_queuecommand) |
| 1045 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | /* initialize asic */ |
| 1047 | static int nsp32hw_init(nsp32_hw_data *data) |
| 1048 | { |
| 1049 | unsigned int base = data->BaseAddress; |
| 1050 | unsigned short irq_stat; |
| 1051 | unsigned long lc_reg; |
| 1052 | unsigned char power; |
| 1053 | |
| 1054 | lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE); |
| 1055 | if ((lc_reg & 0xff00) == 0) { |
| 1056 | lc_reg |= (0x20 << 8); |
| 1057 | nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff); |
| 1058 | } |
| 1059 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1060 | nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); |
| 1061 | nsp32_write2(base, TRANSFER_CONTROL, 0); |
| 1062 | nsp32_write4(base, BM_CNT, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | nsp32_write2(base, SCSI_EXECUTE_PHASE, 0); |
| 1064 | |
| 1065 | do { |
| 1066 | irq_stat = nsp32_read2(base, IRQ_STATUS); |
| 1067 | nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat); |
| 1068 | } while (irq_stat & IRQSTATUS_ANY_IRQ); |
| 1069 | |
| 1070 | /* |
| 1071 | * Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is |
| 1072 | * designated by specification. |
| 1073 | */ |
| 1074 | if ((data->trans_method & NSP32_TRANSFER_PIO) || |
| 1075 | (data->trans_method & NSP32_TRANSFER_MMIO)) { |
| 1076 | nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40); |
| 1077 | nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40); |
| 1078 | } else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { |
| 1079 | nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10); |
| 1080 | nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60); |
| 1081 | } else { |
| 1082 | nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode"); |
| 1083 | } |
| 1084 | |
| 1085 | nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x", |
| 1086 | nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT), |
| 1087 | nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT)); |
| 1088 | |
| 1089 | nsp32_index_write1(base, CLOCK_DIV, data->clock); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1090 | nsp32_index_write1(base, BM_CYCLE, |
| 1091 | MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */ |
| 1093 | |
| 1094 | /* |
| 1095 | * initialize MISC_WRRD register |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1096 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | * Note: Designated parameters is obeyed as following: |
| 1098 | * MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set. |
| 1099 | * MISC_MASTER_TERMINATION_SELECT: It must be set. |
| 1100 | * MISC_BMREQ_NEGATE_TIMING_SEL: It should be set. |
| 1101 | * MISC_AUTOSEL_TIMING_SEL: It should be set. |
| 1102 | * MISC_BMSTOP_CHANGE2_NONDATA_PHASE: It should be set. |
| 1103 | * MISC_DELAYED_BMSTART: It's selected for safety. |
| 1104 | * |
| 1105 | * Note: If MISC_BMSTOP_CHANGE2_NONDATA_PHASE is set, then |
| 1106 | * we have to set TRANSFERCONTROL_BM_START as 0 and set |
| 1107 | * appropriate value before restarting bus master transfer. |
| 1108 | */ |
| 1109 | nsp32_index_write2(base, MISC_WR, |
| 1110 | (SCSI_DIRECTION_DETECTOR_SELECT | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1111 | DELAYED_BMSTART | |
| 1112 | MASTER_TERMINATION_SELECT | |
| 1113 | BMREQ_NEGATE_TIMING_SEL | |
| 1114 | AUTOSEL_TIMING_SEL | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | BMSTOP_CHANGE2_NONDATA_PHASE)); |
| 1116 | |
| 1117 | nsp32_index_write1(base, TERM_PWR_CONTROL, 0); |
| 1118 | power = nsp32_index_read1(base, TERM_PWR_CONTROL); |
| 1119 | if (!(power & SENSE)) { |
| 1120 | nsp32_msg(KERN_INFO, "term power on"); |
| 1121 | nsp32_index_write1(base, TERM_PWR_CONTROL, BPWR); |
| 1122 | } |
| 1123 | |
| 1124 | nsp32_write2(base, TIMER_SET, TIMER_STOP); |
| 1125 | nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */ |
| 1126 | |
| 1127 | nsp32_write1(base, SYNC_REG, 0); |
| 1128 | nsp32_write1(base, ACK_WIDTH, 0); |
| 1129 | nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); |
| 1130 | |
| 1131 | /* |
| 1132 | * enable to select designated IRQ (except for |
| 1133 | * IRQSELECT_SERR, IRQSELECT_PERR, IRQSELECT_BMCNTERR) |
| 1134 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1135 | nsp32_index_write2(base, IRQ_SELECT, |
| 1136 | IRQSELECT_TIMER_IRQ | |
| 1137 | IRQSELECT_SCSIRESET_IRQ | |
| 1138 | IRQSELECT_FIFO_SHLD_IRQ | |
| 1139 | IRQSELECT_RESELECT_IRQ | |
| 1140 | IRQSELECT_PHASE_CHANGE_IRQ | |
| 1141 | IRQSELECT_AUTO_SCSI_SEQ_IRQ | |
| 1142 | // IRQSELECT_BMCNTERR_IRQ | |
| 1143 | IRQSELECT_TARGET_ABORT_IRQ | |
| 1144 | IRQSELECT_MASTER_ABORT_IRQ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | nsp32_write2(base, IRQ_CONTROL, 0); |
| 1146 | |
| 1147 | /* PCI LED off */ |
| 1148 | nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF); |
| 1149 | nsp32_index_write1(base, EXT_PORT, LED_OFF); |
| 1150 | |
| 1151 | return TRUE; |
| 1152 | } |
| 1153 | |
| 1154 | |
| 1155 | /* interrupt routine */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1156 | static irqreturn_t do_nsp32_isr(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | { |
| 1158 | nsp32_hw_data *data = dev_id; |
| 1159 | unsigned int base = data->BaseAddress; |
| 1160 | struct scsi_cmnd *SCpnt = data->CurrentSC; |
| 1161 | unsigned short auto_stat, irq_stat, trans_stat; |
| 1162 | unsigned char busmon, busphase; |
| 1163 | unsigned long flags; |
| 1164 | int ret; |
| 1165 | int handled = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | struct Scsi_Host *host = data->Host; |
Adrian Bunk | 6a31a8a | 2007-05-23 14:41:46 -0700 | [diff] [blame] | 1167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | spin_lock_irqsave(host->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | |
| 1170 | /* |
| 1171 | * IRQ check, then enable IRQ mask |
| 1172 | */ |
| 1173 | irq_stat = nsp32_read2(base, IRQ_STATUS); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1174 | nsp32_dbg(NSP32_DEBUG_INTR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | "enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat); |
| 1176 | /* is this interrupt comes from Ninja asic? */ |
| 1177 | if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) { |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1178 | nsp32_dbg(NSP32_DEBUG_INTR, |
| 1179 | "shared interrupt: irq other 0x%x", irq_stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | goto out2; |
| 1181 | } |
| 1182 | handled = 1; |
| 1183 | nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); |
| 1184 | |
| 1185 | busmon = nsp32_read1(base, SCSI_BUS_MONITOR); |
| 1186 | busphase = busmon & BUSMON_PHASE_MASK; |
| 1187 | |
| 1188 | trans_stat = nsp32_read2(base, TRANSFER_STATUS); |
| 1189 | if ((irq_stat == 0xffff) && (trans_stat == 0xffff)) { |
| 1190 | nsp32_msg(KERN_INFO, "card disconnect"); |
| 1191 | if (data->CurrentSC != NULL) { |
| 1192 | nsp32_msg(KERN_INFO, "clean up current SCSI command"); |
| 1193 | SCpnt->result = DID_BAD_TARGET << 16; |
| 1194 | nsp32_scsi_done(SCpnt); |
| 1195 | } |
| 1196 | goto out; |
| 1197 | } |
| 1198 | |
| 1199 | /* Timer IRQ */ |
| 1200 | if (irq_stat & IRQSTATUS_TIMER_IRQ) { |
| 1201 | nsp32_dbg(NSP32_DEBUG_INTR, "timer stop"); |
| 1202 | nsp32_write2(base, TIMER_SET, TIMER_STOP); |
| 1203 | goto out; |
| 1204 | } |
| 1205 | |
| 1206 | /* SCSI reset */ |
| 1207 | if (irq_stat & IRQSTATUS_SCSIRESET_IRQ) { |
| 1208 | nsp32_msg(KERN_INFO, "detected someone do bus reset"); |
| 1209 | nsp32_do_bus_reset(data); |
| 1210 | if (SCpnt != NULL) { |
| 1211 | SCpnt->result = DID_RESET << 16; |
| 1212 | nsp32_scsi_done(SCpnt); |
| 1213 | } |
| 1214 | goto out; |
| 1215 | } |
| 1216 | |
| 1217 | if (SCpnt == NULL) { |
| 1218 | nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened"); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1219 | nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x", |
| 1220 | irq_stat, trans_stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | goto out; |
| 1222 | } |
| 1223 | |
| 1224 | /* |
| 1225 | * AutoSCSI Interrupt. |
| 1226 | * Note: This interrupt is occurred when AutoSCSI is finished. Then |
| 1227 | * check SCSIEXECUTEPHASE, and do appropriate action. Each phases are |
| 1228 | * recorded when AutoSCSI sequencer has been processed. |
| 1229 | */ |
| 1230 | if(irq_stat & IRQSTATUS_AUTOSCSI_IRQ) { |
| 1231 | /* getting SCSI executed phase */ |
| 1232 | auto_stat = nsp32_read2(base, SCSI_EXECUTE_PHASE); |
| 1233 | nsp32_write2(base, SCSI_EXECUTE_PHASE, 0); |
| 1234 | |
| 1235 | /* Selection Timeout, go busfree phase. */ |
| 1236 | if (auto_stat & SELECTION_TIMEOUT) { |
| 1237 | nsp32_dbg(NSP32_DEBUG_INTR, |
| 1238 | "selection timeout occurred"); |
| 1239 | |
| 1240 | SCpnt->result = DID_TIME_OUT << 16; |
| 1241 | nsp32_scsi_done(SCpnt); |
| 1242 | goto out; |
| 1243 | } |
| 1244 | |
| 1245 | if (auto_stat & MSGOUT_PHASE) { |
| 1246 | /* |
| 1247 | * MsgOut phase was processed. |
| 1248 | * If MSG_IN_OCCUER is not set, then MsgOut phase is |
| 1249 | * completed. Thus, msgout_len must reset. Otherwise, |
| 1250 | * nothing to do here. If MSG_OUT_OCCUER is occurred, |
| 1251 | * then we will encounter the condition and check. |
| 1252 | */ |
| 1253 | if (!(auto_stat & MSG_IN_OCCUER) && |
| 1254 | (data->msgout_len <= 3)) { |
| 1255 | /* |
| 1256 | * !MSG_IN_OCCUER && msgout_len <=3 |
| 1257 | * ---> AutoSCSI with MSGOUTreg is processed. |
| 1258 | */ |
| 1259 | data->msgout_len = 0; |
Jason Yan | 94e4765 | 2020-09-11 17:10:49 +0800 | [diff] [blame] | 1260 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | |
| 1262 | nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed"); |
| 1263 | } |
| 1264 | |
| 1265 | if ((auto_stat & DATA_IN_PHASE) && |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 1266 | (scsi_get_resid(SCpnt) > 0) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) { |
| 1268 | printk( "auto+fifo\n"); |
| 1269 | //nsp32_pio_read(SCpnt); |
| 1270 | } |
| 1271 | |
| 1272 | if (auto_stat & (DATA_IN_PHASE | DATA_OUT_PHASE)) { |
| 1273 | /* DATA_IN_PHASE/DATA_OUT_PHASE was processed. */ |
| 1274 | nsp32_dbg(NSP32_DEBUG_INTR, |
| 1275 | "Data in/out phase processed"); |
| 1276 | |
| 1277 | /* read BMCNT, SGT pointer addr */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1278 | nsp32_dbg(NSP32_DEBUG_INTR, "BMCNT=0x%lx", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | nsp32_read4(base, BM_CNT)); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1280 | nsp32_dbg(NSP32_DEBUG_INTR, "addr=0x%lx", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | nsp32_read4(base, SGT_ADR)); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1282 | nsp32_dbg(NSP32_DEBUG_INTR, "SACK=0x%lx", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | nsp32_read4(base, SACK_CNT)); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1284 | nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | nsp32_read4(base, SAVED_SACK_CNT)); |
| 1286 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1287 | scsi_set_resid(SCpnt, 0); /* all data transferred! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | } |
| 1289 | |
| 1290 | /* |
| 1291 | * MsgIn Occur |
| 1292 | */ |
| 1293 | if (auto_stat & MSG_IN_OCCUER) { |
| 1294 | nsp32_msgin_occur(SCpnt, irq_stat, auto_stat); |
| 1295 | } |
| 1296 | |
| 1297 | /* |
| 1298 | * MsgOut Occur |
| 1299 | */ |
| 1300 | if (auto_stat & MSG_OUT_OCCUER) { |
| 1301 | nsp32_msgout_occur(SCpnt); |
| 1302 | } |
| 1303 | |
| 1304 | /* |
| 1305 | * Bus Free Occur |
| 1306 | */ |
| 1307 | if (auto_stat & BUS_FREE_OCCUER) { |
| 1308 | ret = nsp32_busfree_occur(SCpnt, auto_stat); |
| 1309 | if (ret == TRUE) { |
| 1310 | goto out; |
| 1311 | } |
| 1312 | } |
| 1313 | |
| 1314 | if (auto_stat & STATUS_PHASE) { |
| 1315 | /* |
| 1316 | * Read CSB and substitute CSB for SCpnt->result |
| 1317 | * to save status phase stutas byte. |
| 1318 | * scsi error handler checks host_byte (DID_*: |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1319 | * low level driver to indicate status), then checks |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | * status_byte (SCSI status byte). |
| 1321 | */ |
| 1322 | SCpnt->result = (int)nsp32_read1(base, SCSI_CSB_IN); |
| 1323 | } |
| 1324 | |
| 1325 | if (auto_stat & ILLEGAL_PHASE) { |
| 1326 | /* Illegal phase is detected. SACK is not back. */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1327 | nsp32_msg(KERN_WARNING, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | "AUTO SCSI ILLEGAL PHASE OCCUR!!!!"); |
| 1329 | |
| 1330 | /* TODO: currently we don't have any action... bus reset? */ |
| 1331 | |
| 1332 | /* |
| 1333 | * To send back SACK, assert, wait, and negate. |
| 1334 | */ |
| 1335 | nsp32_sack_assert(data); |
| 1336 | nsp32_wait_req(data, NEGATE); |
| 1337 | nsp32_sack_negate(data); |
| 1338 | |
| 1339 | } |
| 1340 | |
| 1341 | if (auto_stat & COMMAND_PHASE) { |
| 1342 | /* nothing to do */ |
| 1343 | nsp32_dbg(NSP32_DEBUG_INTR, "Command phase processed"); |
| 1344 | } |
| 1345 | |
| 1346 | if (auto_stat & AUTOSCSI_BUSY) { |
| 1347 | /* AutoSCSI is running */ |
| 1348 | } |
| 1349 | |
| 1350 | show_autophase(auto_stat); |
| 1351 | } |
| 1352 | |
| 1353 | /* FIFO_SHLD_IRQ */ |
| 1354 | if (irq_stat & IRQSTATUS_FIFO_SHLD_IRQ) { |
| 1355 | nsp32_dbg(NSP32_DEBUG_INTR, "FIFO IRQ"); |
| 1356 | |
| 1357 | switch(busphase) { |
| 1358 | case BUSPHASE_DATA_OUT: |
| 1359 | nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write"); |
| 1360 | |
| 1361 | //nsp32_pio_write(SCpnt); |
| 1362 | |
| 1363 | break; |
| 1364 | |
| 1365 | case BUSPHASE_DATA_IN: |
| 1366 | nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read"); |
| 1367 | |
| 1368 | //nsp32_pio_read(SCpnt); |
| 1369 | |
| 1370 | break; |
| 1371 | |
| 1372 | case BUSPHASE_STATUS: |
| 1373 | nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status"); |
| 1374 | |
Bart Van Assche | 195771c | 2022-02-18 11:51:05 -0800 | [diff] [blame] | 1375 | nsp32_priv(SCpnt)->status = nsp32_read1(base, SCSI_CSB_IN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | |
| 1377 | break; |
| 1378 | default: |
| 1379 | nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase"); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1380 | nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x", |
| 1381 | irq_stat, trans_stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | show_busphase(busphase); |
| 1383 | break; |
| 1384 | } |
| 1385 | |
| 1386 | goto out; |
| 1387 | } |
| 1388 | |
| 1389 | /* Phase Change IRQ */ |
| 1390 | if (irq_stat & IRQSTATUS_PHASE_CHANGE_IRQ) { |
| 1391 | nsp32_dbg(NSP32_DEBUG_INTR, "phase change IRQ"); |
| 1392 | |
| 1393 | switch(busphase) { |
| 1394 | case BUSPHASE_MESSAGE_IN: |
| 1395 | nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in"); |
| 1396 | nsp32_msgin_occur(SCpnt, irq_stat, 0); |
| 1397 | break; |
| 1398 | default: |
| 1399 | nsp32_msg(KERN_WARNING, "phase chg/other phase?"); |
| 1400 | nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n", |
| 1401 | irq_stat, trans_stat); |
| 1402 | show_busphase(busphase); |
| 1403 | break; |
| 1404 | } |
| 1405 | goto out; |
| 1406 | } |
| 1407 | |
| 1408 | /* PCI_IRQ */ |
| 1409 | if (irq_stat & IRQSTATUS_PCI_IRQ) { |
| 1410 | nsp32_dbg(NSP32_DEBUG_INTR, "PCI IRQ occurred"); |
| 1411 | /* Do nothing */ |
| 1412 | } |
| 1413 | |
| 1414 | /* BMCNTERR_IRQ */ |
| 1415 | if (irq_stat & IRQSTATUS_BMCNTERR_IRQ) { |
| 1416 | nsp32_msg(KERN_ERR, "Received unexpected BMCNTERR IRQ! "); |
| 1417 | /* |
| 1418 | * TODO: To be implemented improving bus master |
Dirk Hohndel | 06fe9fb | 2009-09-28 21:43:57 -0400 | [diff] [blame] | 1419 | * transfer reliability when BMCNTERR is occurred in |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | * AutoSCSI phase described in specification. |
| 1421 | */ |
| 1422 | } |
| 1423 | |
| 1424 | #if 0 |
| 1425 | nsp32_dbg(NSP32_DEBUG_INTR, |
| 1426 | "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat); |
| 1427 | show_busphase(busphase); |
| 1428 | #endif |
| 1429 | |
| 1430 | out: |
| 1431 | /* disable IRQ mask */ |
| 1432 | nsp32_write2(base, IRQ_CONTROL, 0); |
| 1433 | |
| 1434 | out2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | spin_unlock_irqrestore(host->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | |
| 1437 | nsp32_dbg(NSP32_DEBUG_INTR, "exit"); |
| 1438 | |
| 1439 | return IRQ_RETVAL(handled); |
| 1440 | } |
| 1441 | |
Adrian Bunk | 6a31a8a | 2007-05-23 14:41:46 -0700 | [diff] [blame] | 1442 | |
Al Viro | 35c6e0e | 2013-03-31 02:11:39 -0400 | [diff] [blame] | 1443 | static int nsp32_show_info(struct seq_file *m, struct Scsi_Host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | unsigned long flags; |
| 1446 | nsp32_hw_data *data; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1447 | int hostno; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | unsigned int base; |
| 1449 | unsigned char mode_reg; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1450 | int id, speed; |
| 1451 | long model; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | hostno = host->host_no; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | data = (nsp32_hw_data *)host->hostdata; |
| 1455 | base = host->io_port; |
| 1456 | |
Rasmus Villemoes | 91c40f2 | 2014-12-03 00:10:52 +0100 | [diff] [blame] | 1457 | seq_puts(m, "NinjaSCSI-32 status\n\n"); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1458 | seq_printf(m, "Driver version: %s, $Revision: 1.33 $\n", |
| 1459 | nsp32_release_version); |
| 1460 | seq_printf(m, "SCSI host No.: %d\n", hostno); |
| 1461 | seq_printf(m, "IRQ: %d\n", host->irq); |
| 1462 | seq_printf(m, "IO: 0x%lx-0x%lx\n", |
| 1463 | host->io_port, host->io_port + host->n_io_port - 1); |
| 1464 | seq_printf(m, "MMIO(virtual address): 0x%lx-0x%lx\n", |
| 1465 | host->base, host->base + data->MmioLength - 1); |
| 1466 | seq_printf(m, "sg_tablesize: %d\n", |
| 1467 | host->sg_tablesize); |
| 1468 | seq_printf(m, "Chip revision: 0x%x\n", |
| 1469 | (nsp32_read2(base, INDEX_REG) >> 8) & 0xff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | |
| 1471 | mode_reg = nsp32_index_read1(base, CHIP_MODE); |
| 1472 | model = data->pci_devid->driver_data; |
| 1473 | |
| 1474 | #ifdef CONFIG_PM |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1475 | seq_printf(m, "Power Management: %s\n", |
| 1476 | (mode_reg & OPTF) ? "yes" : "no"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | #endif |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1478 | seq_printf(m, "OEM: %ld, %s\n", |
| 1479 | (mode_reg & (OEM0|OEM1)), nsp32_model[model]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | |
| 1481 | spin_lock_irqsave(&(data->Lock), flags); |
Rasmus Villemoes | 0c3de38 | 2014-12-03 00:10:49 +0100 | [diff] [blame] | 1482 | seq_printf(m, "CurrentSC: 0x%p\n\n", data->CurrentSC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | spin_unlock_irqrestore(&(data->Lock), flags); |
| 1484 | |
| 1485 | |
Rasmus Villemoes | 91c40f2 | 2014-12-03 00:10:52 +0100 | [diff] [blame] | 1486 | seq_puts(m, "SDTR status\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | for (id = 0; id < ARRAY_SIZE(data->target); id++) { |
| 1488 | |
Rasmus Villemoes | 0c3de38 | 2014-12-03 00:10:49 +0100 | [diff] [blame] | 1489 | seq_printf(m, "id %d: ", id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | |
| 1491 | if (id == host->this_id) { |
Rasmus Villemoes | 91c40f2 | 2014-12-03 00:10:52 +0100 | [diff] [blame] | 1492 | seq_puts(m, "----- NinjaSCSI-32 host adapter\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | continue; |
| 1494 | } |
| 1495 | |
| 1496 | if (data->target[id].sync_flag == SDTR_DONE) { |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1497 | if (data->target[id].period == 0 && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | data->target[id].offset == ASYNC_OFFSET ) { |
Rasmus Villemoes | 91c40f2 | 2014-12-03 00:10:52 +0100 | [diff] [blame] | 1499 | seq_puts(m, "async"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | } else { |
Rasmus Villemoes | 91c40f2 | 2014-12-03 00:10:52 +0100 | [diff] [blame] | 1501 | seq_puts(m, " sync"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | } |
| 1503 | } else { |
Rasmus Villemoes | 91c40f2 | 2014-12-03 00:10:52 +0100 | [diff] [blame] | 1504 | seq_puts(m, " none"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | } |
| 1506 | |
| 1507 | if (data->target[id].period != 0) { |
| 1508 | |
| 1509 | speed = 1000000 / (data->target[id].period * 4); |
| 1510 | |
Rasmus Villemoes | 0c3de38 | 2014-12-03 00:10:49 +0100 | [diff] [blame] | 1511 | seq_printf(m, " transfer %d.%dMB/s, offset %d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1512 | speed / 1000, |
| 1513 | speed % 1000, |
| 1514 | data->target[id].offset |
| 1515 | ); |
| 1516 | } |
Rasmus Villemoes | f50332f | 2014-12-03 00:10:54 +0100 | [diff] [blame] | 1517 | seq_putc(m, '\n'); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | } |
Al Viro | 35c6e0e | 2013-03-31 02:11:39 -0400 | [diff] [blame] | 1519 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | |
| 1522 | |
| 1523 | |
| 1524 | /* |
| 1525 | * Reset parameters and call scsi_done for data->cur_lunt. |
| 1526 | * Be careful setting SCpnt->result = DID_* before calling this function. |
| 1527 | */ |
| 1528 | static void nsp32_scsi_done(struct scsi_cmnd *SCpnt) |
| 1529 | { |
| 1530 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 1531 | unsigned int base = SCpnt->device->host->io_port; |
| 1532 | |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 1533 | scsi_dma_unmap(SCpnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | /* |
| 1536 | * clear TRANSFERCONTROL_BM_START |
| 1537 | */ |
| 1538 | nsp32_write2(base, TRANSFER_CONTROL, 0); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1539 | nsp32_write4(base, BM_CNT, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1540 | |
| 1541 | /* |
| 1542 | * call scsi_done |
| 1543 | */ |
Bart Van Assche | 4876036 | 2021-10-07 13:28:53 -0700 | [diff] [blame] | 1544 | scsi_done(SCpnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | |
| 1546 | /* |
| 1547 | * reset parameters |
| 1548 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1549 | data->cur_lunt->SCpnt = NULL; |
| 1550 | data->cur_lunt = NULL; |
| 1551 | data->cur_target = NULL; |
| 1552 | data->CurrentSC = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | } |
| 1554 | |
| 1555 | |
| 1556 | /* |
| 1557 | * Bus Free Occur |
| 1558 | * |
| 1559 | * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase |
| 1560 | * with ACK reply when below condition is matched: |
| 1561 | * MsgIn 00: Command Complete. |
| 1562 | * MsgIn 02: Save Data Pointer. |
Geert Uytterhoeven | 1125c70 | 2019-10-24 17:26:33 +0200 | [diff] [blame] | 1563 | * MsgIn 04: Disconnect. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | * In other case, unexpected BUSFREE is detected. |
| 1565 | */ |
| 1566 | static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph) |
| 1567 | { |
| 1568 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 1569 | unsigned int base = SCpnt->device->host->io_port; |
| 1570 | |
| 1571 | nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph); |
| 1572 | show_autophase(execph); |
| 1573 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1574 | nsp32_write4(base, BM_CNT, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | nsp32_write2(base, TRANSFER_CONTROL, 0); |
| 1576 | |
| 1577 | /* |
| 1578 | * MsgIn 02: Save Data Pointer |
| 1579 | * |
| 1580 | * VALID: |
| 1581 | * Save Data Pointer is received. Adjust pointer. |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1582 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | * NO-VALID: |
| 1584 | * SCSI-3 says if Save Data Pointer is not received, then we restart |
| 1585 | * processing and we can't adjust any SCSI data pointer in next data |
| 1586 | * phase. |
| 1587 | */ |
| 1588 | if (execph & MSGIN_02_VALID) { |
| 1589 | nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid"); |
| 1590 | |
| 1591 | /* |
| 1592 | * Check sack_cnt/saved_sack_cnt, then adjust sg table if |
| 1593 | * needed. |
| 1594 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1595 | if (!(execph & MSGIN_00_VALID) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1596 | ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) { |
| 1597 | unsigned int sacklen, s_sacklen; |
| 1598 | |
| 1599 | /* |
| 1600 | * Read SACK count and SAVEDSACK count, then compare. |
| 1601 | */ |
| 1602 | sacklen = nsp32_read4(base, SACK_CNT ); |
| 1603 | s_sacklen = nsp32_read4(base, SAVED_SACK_CNT); |
| 1604 | |
| 1605 | /* |
| 1606 | * If SAVEDSACKCNT == 0, it means SavedDataPointer is |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1607 | * come after data transferring. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | */ |
| 1609 | if (s_sacklen > 0) { |
| 1610 | /* |
| 1611 | * Comparing between sack and savedsack to |
| 1612 | * check the condition of AutoMsgIn03. |
| 1613 | * |
| 1614 | * If they are same, set msgin03 == TRUE, |
| 1615 | * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at |
| 1616 | * reselection. On the other hand, if they |
| 1617 | * aren't same, set msgin03 == FALSE, and |
| 1618 | * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at |
| 1619 | * reselection. |
| 1620 | */ |
| 1621 | if (sacklen != s_sacklen) { |
| 1622 | data->cur_lunt->msgin03 = FALSE; |
| 1623 | } else { |
| 1624 | data->cur_lunt->msgin03 = TRUE; |
| 1625 | } |
| 1626 | |
| 1627 | nsp32_adjust_busfree(SCpnt, s_sacklen); |
| 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | /* This value has not substitude with valid value yet... */ |
| 1632 | //data->cur_lunt->save_datp = data->cur_datp; |
| 1633 | } else { |
| 1634 | /* |
| 1635 | * no processing. |
| 1636 | */ |
| 1637 | } |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1638 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1639 | if (execph & MSGIN_03_VALID) { |
| 1640 | /* MsgIn03 was valid to be processed. No need processing. */ |
| 1641 | } |
| 1642 | |
| 1643 | /* |
| 1644 | * target SDTR check |
| 1645 | */ |
| 1646 | if (data->cur_target->sync_flag & SDTR_INITIATOR) { |
| 1647 | /* |
| 1648 | * SDTR negotiation pulled by the initiator has not |
| 1649 | * finished yet. Fall back to ASYNC mode. |
| 1650 | */ |
| 1651 | nsp32_set_async(data, data->cur_target); |
| 1652 | data->cur_target->sync_flag &= ~SDTR_INITIATOR; |
| 1653 | data->cur_target->sync_flag |= SDTR_DONE; |
| 1654 | } else if (data->cur_target->sync_flag & SDTR_TARGET) { |
| 1655 | /* |
| 1656 | * SDTR negotiation pulled by the target has been |
| 1657 | * negotiating. |
| 1658 | */ |
| 1659 | if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) { |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1660 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | * If valid message is received, then |
| 1662 | * negotiation is succeeded. |
| 1663 | */ |
| 1664 | } else { |
| 1665 | /* |
| 1666 | * On the contrary, if unexpected bus free is |
| 1667 | * occurred, then negotiation is failed. Fall |
| 1668 | * back to ASYNC mode. |
| 1669 | */ |
| 1670 | nsp32_set_async(data, data->cur_target); |
| 1671 | } |
| 1672 | data->cur_target->sync_flag &= ~SDTR_TARGET; |
| 1673 | data->cur_target->sync_flag |= SDTR_DONE; |
| 1674 | } |
| 1675 | |
| 1676 | /* |
| 1677 | * It is always ensured by SCSI standard that initiator |
| 1678 | * switches into Bus Free Phase after |
| 1679 | * receiving message 00 (Command Complete), 04 (Disconnect). |
| 1680 | * It's the reason that processing here is valid. |
| 1681 | */ |
| 1682 | if (execph & MSGIN_00_VALID) { |
| 1683 | /* MsgIn 00: Command Complete */ |
| 1684 | nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete"); |
| 1685 | |
Bart Van Assche | 195771c | 2022-02-18 11:51:05 -0800 | [diff] [blame] | 1686 | nsp32_priv(SCpnt)->status = nsp32_read1(base, SCSI_CSB_IN); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1687 | nsp32_dbg(NSP32_DEBUG_BUSFREE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1688 | "normal end stat=0x%x resid=0x%x\n", |
Bart Van Assche | 195771c | 2022-02-18 11:51:05 -0800 | [diff] [blame] | 1689 | nsp32_priv(SCpnt)->status, scsi_get_resid(SCpnt)); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1690 | SCpnt->result = (DID_OK << 16) | |
Bart Van Assche | 195771c | 2022-02-18 11:51:05 -0800 | [diff] [blame] | 1691 | (nsp32_priv(SCpnt)->status << 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | nsp32_scsi_done(SCpnt); |
| 1693 | /* All operation is done */ |
| 1694 | return TRUE; |
| 1695 | } else if (execph & MSGIN_04_VALID) { |
| 1696 | /* MsgIn 04: Disconnect */ |
Bart Van Assche | 195771c | 2022-02-18 11:51:05 -0800 | [diff] [blame] | 1697 | nsp32_priv(SCpnt)->status = nsp32_read1(base, SCSI_CSB_IN); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1698 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect"); |
| 1700 | return TRUE; |
| 1701 | } else { |
| 1702 | /* Unexpected bus free */ |
| 1703 | nsp32_msg(KERN_WARNING, "unexpected bus free occurred"); |
| 1704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | SCpnt->result = DID_ERROR << 16; |
| 1706 | nsp32_scsi_done(SCpnt); |
| 1707 | return TRUE; |
| 1708 | } |
| 1709 | return FALSE; |
| 1710 | } |
| 1711 | |
| 1712 | |
| 1713 | /* |
| 1714 | * nsp32_adjust_busfree - adjusting SG table |
| 1715 | * |
| 1716 | * Note: This driver adjust the SG table using SCSI ACK |
| 1717 | * counter instead of BMCNT counter! |
| 1718 | */ |
| 1719 | static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen) |
| 1720 | { |
| 1721 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1722 | int old_entry = data->cur_entry; |
| 1723 | int new_entry; |
| 1724 | int sg_num = data->cur_lunt->sg_num; |
| 1725 | nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt; |
| 1726 | unsigned int restlen, sentlen; |
| 1727 | u32_le len, addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 1729 | nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", scsi_get_resid(SCpnt)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | |
| 1731 | /* adjust saved SACK count with 4 byte start address boundary */ |
| 1732 | s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3; |
| 1733 | |
| 1734 | /* |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1735 | * calculate new_entry from sack count and each sgt[].len |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1736 | * calculate the byte which is intent to send |
| 1737 | */ |
| 1738 | sentlen = 0; |
| 1739 | for (new_entry = old_entry; new_entry < sg_num; new_entry++) { |
| 1740 | sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND); |
| 1741 | if (sentlen > s_sacklen) { |
| 1742 | break; |
| 1743 | } |
| 1744 | } |
| 1745 | |
| 1746 | /* all sgt is processed */ |
| 1747 | if (new_entry == sg_num) { |
| 1748 | goto last; |
| 1749 | } |
| 1750 | |
| 1751 | if (sentlen == s_sacklen) { |
| 1752 | /* XXX: confirm it's ok or not */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1753 | /* In this case, it's ok because we are at |
| 1754 | * the head element of the sg. restlen is correctly |
| 1755 | * calculated. |
| 1756 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | } |
| 1758 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1759 | /* calculate the rest length for transferring */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | restlen = sentlen - s_sacklen; |
| 1761 | |
| 1762 | /* update adjusting current SG table entry */ |
| 1763 | len = le32_to_cpu(sgt[new_entry].len); |
| 1764 | addr = le32_to_cpu(sgt[new_entry].addr); |
| 1765 | addr += (len - restlen); |
| 1766 | sgt[new_entry].addr = cpu_to_le32(addr); |
| 1767 | sgt[new_entry].len = cpu_to_le32(restlen); |
| 1768 | |
| 1769 | /* set cur_entry with new_entry */ |
| 1770 | data->cur_entry = new_entry; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1771 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | return; |
| 1773 | |
| 1774 | last: |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 1775 | if (scsi_get_resid(SCpnt) < sentlen) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | nsp32_msg(KERN_ERR, "resid underflow"); |
| 1777 | } |
| 1778 | |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 1779 | scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) - sentlen); |
| 1780 | nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", scsi_get_resid(SCpnt)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | |
| 1782 | /* update hostdata and lun */ |
| 1783 | |
| 1784 | return; |
| 1785 | } |
| 1786 | |
| 1787 | |
| 1788 | /* |
| 1789 | * It's called MsgOut phase occur. |
| 1790 | * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in |
| 1791 | * message out phase. It, however, has more than 3 messages, |
| 1792 | * HBA creates the interrupt and we have to process by hand. |
| 1793 | */ |
| 1794 | static void nsp32_msgout_occur(struct scsi_cmnd *SCpnt) |
| 1795 | { |
| 1796 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 1797 | unsigned int base = SCpnt->device->host->io_port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | int i; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1799 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, |
| 1801 | "enter: msgout_len: 0x%x", data->msgout_len); |
| 1802 | |
| 1803 | /* |
| 1804 | * If MsgOut phase is occurred without having any |
| 1805 | * message, then No_Operation is sent (SCSI-2). |
| 1806 | */ |
| 1807 | if (data->msgout_len == 0) { |
| 1808 | nsp32_build_nop(SCpnt); |
| 1809 | } |
| 1810 | |
| 1811 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | * send messages |
| 1813 | */ |
| 1814 | for (i = 0; i < data->msgout_len; i++) { |
| 1815 | nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, |
| 1816 | "%d : 0x%x", i, data->msgoutbuf[i]); |
| 1817 | |
| 1818 | /* |
| 1819 | * Check REQ is asserted. |
| 1820 | */ |
| 1821 | nsp32_wait_req(data, ASSERT); |
| 1822 | |
| 1823 | if (i == (data->msgout_len - 1)) { |
| 1824 | /* |
| 1825 | * If the last message, set the AutoSCSI restart |
| 1826 | * before send back the ack message. AutoSCSI |
| 1827 | * restart automatically negate ATN signal. |
| 1828 | */ |
| 1829 | //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02); |
| 1830 | //nsp32_restart_autoscsi(SCpnt, command); |
| 1831 | nsp32_write2(base, COMMAND_CONTROL, |
| 1832 | (CLEAR_CDB_FIFO_POINTER | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1833 | AUTO_COMMAND_PHASE | |
| 1834 | AUTOSCSI_RESTART | |
| 1835 | AUTO_MSGIN_00_OR_04 | |
| 1836 | AUTO_MSGIN_02 )); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1837 | } |
| 1838 | /* |
| 1839 | * Write data with SACK, then wait sack is |
| 1840 | * automatically negated. |
| 1841 | */ |
| 1842 | nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]); |
| 1843 | nsp32_wait_sack(data, NEGATE); |
| 1844 | |
| 1845 | nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n", |
| 1846 | nsp32_read1(base, SCSI_BUS_MONITOR)); |
Jason Yan | 94e4765 | 2020-09-11 17:10:49 +0800 | [diff] [blame] | 1847 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | |
| 1849 | data->msgout_len = 0; |
| 1850 | |
| 1851 | nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit"); |
| 1852 | } |
| 1853 | |
| 1854 | /* |
| 1855 | * Restart AutoSCSI |
| 1856 | * |
| 1857 | * Note: Restarting AutoSCSI needs set: |
| 1858 | * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL |
| 1859 | */ |
| 1860 | static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short command) |
| 1861 | { |
| 1862 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 1863 | unsigned int base = data->BaseAddress; |
| 1864 | unsigned short transfer = 0; |
| 1865 | |
| 1866 | nsp32_dbg(NSP32_DEBUG_RESTART, "enter"); |
| 1867 | |
| 1868 | if (data->cur_target == NULL || data->cur_lunt == NULL) { |
| 1869 | nsp32_msg(KERN_ERR, "Target or Lun is invalid"); |
| 1870 | } |
| 1871 | |
| 1872 | /* |
| 1873 | * set SYNC_REG |
| 1874 | * Don't set BM_START_ADR before setting this register. |
| 1875 | */ |
| 1876 | nsp32_write1(base, SYNC_REG, data->cur_target->syncreg); |
| 1877 | |
| 1878 | /* |
| 1879 | * set ACKWIDTH |
| 1880 | */ |
| 1881 | nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth); |
| 1882 | |
| 1883 | /* |
| 1884 | * set SREQ hazard killer sampling rate |
| 1885 | */ |
| 1886 | nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg); |
| 1887 | |
| 1888 | /* |
| 1889 | * set SGT ADDR (physical address) |
| 1890 | */ |
| 1891 | nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr); |
| 1892 | |
| 1893 | /* |
| 1894 | * set TRANSFER CONTROL REG |
| 1895 | */ |
| 1896 | transfer = 0; |
| 1897 | transfer |= (TRANSFER_GO | ALL_COUNTER_CLR); |
| 1898 | if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { |
FUJITA Tomonori | 2e91724 | 2007-05-26 02:12:48 +0900 | [diff] [blame] | 1899 | if (scsi_bufflen(SCpnt) > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1900 | transfer |= BM_START; |
| 1901 | } |
| 1902 | } else if (data->trans_method & NSP32_TRANSFER_MMIO) { |
| 1903 | transfer |= CB_MMIO_MODE; |
| 1904 | } else if (data->trans_method & NSP32_TRANSFER_PIO) { |
| 1905 | transfer |= CB_IO_MODE; |
| 1906 | } |
| 1907 | nsp32_write2(base, TRANSFER_CONTROL, transfer); |
| 1908 | |
| 1909 | /* |
| 1910 | * restart AutoSCSI |
| 1911 | * |
| 1912 | * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ? |
| 1913 | */ |
| 1914 | command |= (CLEAR_CDB_FIFO_POINTER | |
| 1915 | AUTO_COMMAND_PHASE | |
| 1916 | AUTOSCSI_RESTART ); |
| 1917 | nsp32_write2(base, COMMAND_CONTROL, command); |
| 1918 | |
| 1919 | nsp32_dbg(NSP32_DEBUG_RESTART, "exit"); |
| 1920 | } |
| 1921 | |
| 1922 | |
| 1923 | /* |
| 1924 | * cannot run automatically message in occur |
| 1925 | */ |
| 1926 | static void nsp32_msgin_occur(struct scsi_cmnd *SCpnt, |
| 1927 | unsigned long irq_status, |
| 1928 | unsigned short execph) |
| 1929 | { |
| 1930 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 1931 | unsigned int base = SCpnt->device->host->io_port; |
| 1932 | unsigned char msg; |
| 1933 | unsigned char msgtype; |
| 1934 | unsigned char newlun; |
| 1935 | unsigned short command = 0; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1936 | int msgclear = TRUE; |
| 1937 | long new_sgtp; |
| 1938 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | |
| 1940 | /* |
| 1941 | * read first message |
| 1942 | * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure |
| 1943 | * of Message-In have to be processed before sending back SCSI ACK. |
| 1944 | */ |
| 1945 | msg = nsp32_read1(base, SCSI_DATA_IN); |
| 1946 | data->msginbuf[(unsigned char)data->msgin_len] = msg; |
| 1947 | msgtype = data->msginbuf[0]; |
| 1948 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, |
| 1949 | "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x", |
| 1950 | data->msgin_len, msg, msgtype); |
| 1951 | |
| 1952 | /* |
| 1953 | * TODO: We need checking whether bus phase is message in? |
| 1954 | */ |
| 1955 | |
| 1956 | /* |
| 1957 | * assert SCSI ACK |
| 1958 | */ |
| 1959 | nsp32_sack_assert(data); |
| 1960 | |
| 1961 | /* |
| 1962 | * processing IDENTIFY |
| 1963 | */ |
| 1964 | if (msgtype & 0x80) { |
| 1965 | if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) { |
| 1966 | /* Invalid (non reselect) phase */ |
| 1967 | goto reject; |
| 1968 | } |
| 1969 | |
| 1970 | newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */ |
| 1971 | ret = nsp32_reselection(SCpnt, newlun); |
| 1972 | if (ret == TRUE) { |
| 1973 | goto restart; |
| 1974 | } else { |
| 1975 | goto reject; |
| 1976 | } |
| 1977 | } |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1978 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | /* |
| 1980 | * processing messages except for IDENTIFY |
| 1981 | * |
| 1982 | * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO. |
| 1983 | */ |
| 1984 | switch (msgtype) { |
| 1985 | /* |
| 1986 | * 1-byte message |
| 1987 | */ |
| 1988 | case COMMAND_COMPLETE: |
| 1989 | case DISCONNECT: |
| 1990 | /* |
| 1991 | * These messages should not be occurred. |
| 1992 | * They should be processed on AutoSCSI sequencer. |
| 1993 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1994 | nsp32_msg(KERN_WARNING, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | "unexpected message of AutoSCSI MsgIn: 0x%x", msg); |
| 1996 | break; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 1997 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | case RESTORE_POINTERS: |
| 1999 | /* |
| 2000 | * AutoMsgIn03 is disabled, and HBA gets this message. |
| 2001 | */ |
| 2002 | |
| 2003 | if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) { |
| 2004 | unsigned int s_sacklen; |
| 2005 | |
| 2006 | s_sacklen = nsp32_read4(base, SAVED_SACK_CNT); |
| 2007 | if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) { |
| 2008 | nsp32_adjust_busfree(SCpnt, s_sacklen); |
| 2009 | } else { |
| 2010 | /* No need to rewrite SGT */ |
| 2011 | } |
| 2012 | } |
| 2013 | data->cur_lunt->msgin03 = FALSE; |
| 2014 | |
| 2015 | /* Update with the new value */ |
| 2016 | |
| 2017 | /* reset SACK/SavedACK counter (or ALL clear?) */ |
| 2018 | nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); |
| 2019 | |
| 2020 | /* |
| 2021 | * set new sg pointer |
| 2022 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2023 | new_sgtp = data->cur_lunt->sglun_paddr + |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable)); |
| 2025 | nsp32_write4(base, SGT_ADR, new_sgtp); |
| 2026 | |
| 2027 | break; |
| 2028 | |
| 2029 | case SAVE_POINTERS: |
| 2030 | /* |
| 2031 | * These messages should not be occurred. |
| 2032 | * They should be processed on AutoSCSI sequencer. |
| 2033 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2034 | nsp32_msg (KERN_WARNING, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS"); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2036 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | break; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2038 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | case MESSAGE_REJECT: |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2040 | /* If previous message_out is sending SDTR, and get |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | message_reject from target, SDTR negotiation is failed */ |
| 2042 | if (data->cur_target->sync_flag & |
| 2043 | (SDTR_INITIATOR | SDTR_TARGET)) { |
| 2044 | /* |
| 2045 | * Current target is negotiating SDTR, but it's |
| 2046 | * failed. Fall back to async transfer mode, and set |
| 2047 | * SDTR_DONE. |
| 2048 | */ |
| 2049 | nsp32_set_async(data, data->cur_target); |
| 2050 | data->cur_target->sync_flag &= ~SDTR_INITIATOR; |
| 2051 | data->cur_target->sync_flag |= SDTR_DONE; |
| 2052 | |
| 2053 | } |
| 2054 | break; |
| 2055 | |
| 2056 | case LINKED_CMD_COMPLETE: |
| 2057 | case LINKED_FLG_CMD_COMPLETE: |
| 2058 | /* queue tag is not supported currently */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2059 | nsp32_msg (KERN_WARNING, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | "unsupported message: 0x%x", msgtype); |
| 2061 | break; |
| 2062 | |
| 2063 | case INITIATE_RECOVERY: |
| 2064 | /* staring ECA (Extended Contingent Allegiance) state. */ |
| 2065 | /* This message is declined in SPI2 or later. */ |
| 2066 | |
| 2067 | goto reject; |
| 2068 | |
| 2069 | /* |
| 2070 | * 2-byte message |
| 2071 | */ |
| 2072 | case SIMPLE_QUEUE_TAG: |
| 2073 | case 0x23: |
| 2074 | /* |
| 2075 | * 0x23: Ignore_Wide_Residue is not declared in scsi.h. |
| 2076 | * No support is needed. |
| 2077 | */ |
| 2078 | if (data->msgin_len >= 1) { |
| 2079 | goto reject; |
| 2080 | } |
| 2081 | |
| 2082 | /* current position is 1-byte of 2 byte */ |
| 2083 | msgclear = FALSE; |
| 2084 | |
| 2085 | break; |
| 2086 | |
| 2087 | /* |
| 2088 | * extended message |
| 2089 | */ |
| 2090 | case EXTENDED_MESSAGE: |
| 2091 | if (data->msgin_len < 1) { |
| 2092 | /* |
| 2093 | * Current position does not reach 2-byte |
| 2094 | * (2-byte is extended message length). |
| 2095 | */ |
| 2096 | msgclear = FALSE; |
| 2097 | break; |
| 2098 | } |
| 2099 | |
| 2100 | if ((data->msginbuf[1] + 1) > data->msgin_len) { |
| 2101 | /* |
| 2102 | * Current extended message has msginbuf[1] + 2 |
| 2103 | * (msgin_len starts counting from 0, so buf[1] + 1). |
| 2104 | * If current message position is not finished, |
| 2105 | * continue receiving message. |
| 2106 | */ |
| 2107 | msgclear = FALSE; |
| 2108 | break; |
| 2109 | } |
| 2110 | |
| 2111 | /* |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2112 | * Reach here means regular length of each type of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | * extended messages. |
| 2114 | */ |
| 2115 | switch (data->msginbuf[2]) { |
| 2116 | case EXTENDED_MODIFY_DATA_POINTER: |
| 2117 | /* TODO */ |
| 2118 | goto reject; /* not implemented yet */ |
| 2119 | break; |
| 2120 | |
| 2121 | case EXTENDED_SDTR: |
| 2122 | /* |
| 2123 | * Exchange this message between initiator and target. |
| 2124 | */ |
| 2125 | if (data->msgin_len != EXTENDED_SDTR_LEN + 1) { |
| 2126 | /* |
| 2127 | * received inappropriate message. |
| 2128 | */ |
| 2129 | goto reject; |
| 2130 | break; |
| 2131 | } |
| 2132 | |
| 2133 | nsp32_analyze_sdtr(SCpnt); |
| 2134 | |
| 2135 | break; |
| 2136 | |
| 2137 | case EXTENDED_EXTENDED_IDENTIFY: |
| 2138 | /* SCSI-I only, not supported. */ |
| 2139 | goto reject; /* not implemented yet */ |
| 2140 | |
| 2141 | break; |
| 2142 | |
| 2143 | case EXTENDED_WDTR: |
| 2144 | goto reject; /* not implemented yet */ |
| 2145 | |
| 2146 | break; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | default: |
| 2149 | goto reject; |
| 2150 | } |
| 2151 | break; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | default: |
| 2154 | goto reject; |
| 2155 | } |
| 2156 | |
| 2157 | restart: |
| 2158 | if (msgclear == TRUE) { |
| 2159 | data->msgin_len = 0; |
| 2160 | |
| 2161 | /* |
| 2162 | * If restarting AutoSCSI, but there are some message to out |
| 2163 | * (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 0 |
| 2164 | * (MV_VALID = 0). When commandcontrol is written with |
| 2165 | * AutoSCSI restart, at the same time MsgOutOccur should be |
| 2166 | * happened (however, such situation is really possible...?). |
| 2167 | */ |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2168 | if (data->msgout_len > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | nsp32_write4(base, SCSI_MSG_OUT, 0); |
| 2170 | command |= AUTO_ATN; |
| 2171 | } |
| 2172 | |
| 2173 | /* |
| 2174 | * restart AutoSCSI |
| 2175 | * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed. |
| 2176 | */ |
| 2177 | command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02); |
| 2178 | |
| 2179 | /* |
| 2180 | * If current msgin03 is TRUE, then flag on. |
| 2181 | */ |
| 2182 | if (data->cur_lunt->msgin03 == TRUE) { |
| 2183 | command |= AUTO_MSGIN_03; |
| 2184 | } |
| 2185 | data->cur_lunt->msgin03 = FALSE; |
| 2186 | } else { |
| 2187 | data->msgin_len++; |
| 2188 | } |
| 2189 | |
| 2190 | /* |
| 2191 | * restart AutoSCSI |
| 2192 | */ |
| 2193 | nsp32_restart_autoscsi(SCpnt, command); |
| 2194 | |
| 2195 | /* |
| 2196 | * wait SCSI REQ negate for REQ-ACK handshake |
| 2197 | */ |
| 2198 | nsp32_wait_req(data, NEGATE); |
| 2199 | |
| 2200 | /* |
| 2201 | * negate SCSI ACK |
| 2202 | */ |
| 2203 | nsp32_sack_negate(data); |
| 2204 | |
| 2205 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit"); |
| 2206 | |
| 2207 | return; |
| 2208 | |
| 2209 | reject: |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2210 | nsp32_msg(KERN_WARNING, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | "invalid or unsupported MessageIn, rejected. " |
| 2212 | "current msg: 0x%x (len: 0x%x), processing msg: 0x%x", |
| 2213 | msg, data->msgin_len, msgtype); |
| 2214 | nsp32_build_reject(SCpnt); |
| 2215 | data->msgin_len = 0; |
| 2216 | |
| 2217 | goto restart; |
| 2218 | } |
| 2219 | |
| 2220 | /* |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2221 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | */ |
| 2223 | static void nsp32_analyze_sdtr(struct scsi_cmnd *SCpnt) |
| 2224 | { |
| 2225 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2226 | nsp32_target *target = data->cur_target; |
| 2227 | unsigned char get_period = data->msginbuf[3]; |
| 2228 | unsigned char get_offset = data->msginbuf[4]; |
| 2229 | int entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | |
| 2231 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter"); |
| 2232 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2233 | /* |
| 2234 | * If this inititor sent the SDTR message, then target responds SDTR, |
| 2235 | * initiator SYNCREG, ACKWIDTH from SDTR parameter. |
| 2236 | * Messages are not appropriate, then send back reject message. |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2237 | * If initiator did not send the SDTR, but target sends SDTR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2238 | * initiator calculator the appropriate parameter and send back SDTR. |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2239 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2240 | if (target->sync_flag & SDTR_INITIATOR) { |
| 2241 | /* |
| 2242 | * Initiator sent SDTR, the target responds and |
| 2243 | * send back negotiation SDTR. |
| 2244 | */ |
| 2245 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR"); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2247 | target->sync_flag &= ~SDTR_INITIATOR; |
| 2248 | target->sync_flag |= SDTR_DONE; |
| 2249 | |
| 2250 | /* |
| 2251 | * offset: |
| 2252 | */ |
| 2253 | if (get_offset > SYNC_OFFSET) { |
| 2254 | /* |
| 2255 | * Negotiation is failed, the target send back |
| 2256 | * unexpected offset value. |
| 2257 | */ |
| 2258 | goto reject; |
| 2259 | } |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | if (get_offset == ASYNC_OFFSET) { |
| 2262 | /* |
| 2263 | * Negotiation is succeeded, the target want |
| 2264 | * to fall back into asynchronous transfer mode. |
| 2265 | */ |
| 2266 | goto async; |
| 2267 | } |
| 2268 | |
| 2269 | /* |
| 2270 | * period: |
| 2271 | * Check whether sync period is too short. If too short, |
| 2272 | * fall back to async mode. If it's ok, then investigate |
| 2273 | * the received sync period. If sync period is acceptable |
| 2274 | * between sync table start_period and end_period, then |
| 2275 | * set this I_T nexus as sent offset and period. |
| 2276 | * If it's not acceptable, send back reject and fall back |
| 2277 | * to async mode. |
| 2278 | */ |
| 2279 | if (get_period < data->synct[0].period_num) { |
| 2280 | /* |
| 2281 | * Negotiation is failed, the target send back |
| 2282 | * unexpected period value. |
| 2283 | */ |
| 2284 | goto reject; |
| 2285 | } |
| 2286 | |
| 2287 | entry = nsp32_search_period_entry(data, target, get_period); |
| 2288 | |
| 2289 | if (entry < 0) { |
| 2290 | /* |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2291 | * Target want to use long period which is not |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | * acceptable NinjaSCSI-32Bi/UDE. |
| 2293 | */ |
| 2294 | goto reject; |
| 2295 | } |
| 2296 | |
| 2297 | /* |
| 2298 | * Set new sync table and offset in this I_T nexus. |
| 2299 | */ |
| 2300 | nsp32_set_sync_entry(data, target, entry, get_offset); |
| 2301 | } else { |
| 2302 | /* Target send SDTR to initiator. */ |
| 2303 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR"); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | target->sync_flag |= SDTR_INITIATOR; |
| 2306 | |
| 2307 | /* offset: */ |
| 2308 | if (get_offset > SYNC_OFFSET) { |
| 2309 | /* send back as SYNC_OFFSET */ |
| 2310 | get_offset = SYNC_OFFSET; |
| 2311 | } |
| 2312 | |
| 2313 | /* period: */ |
| 2314 | if (get_period < data->synct[0].period_num) { |
| 2315 | get_period = data->synct[0].period_num; |
| 2316 | } |
| 2317 | |
| 2318 | entry = nsp32_search_period_entry(data, target, get_period); |
| 2319 | |
| 2320 | if (get_offset == ASYNC_OFFSET || entry < 0) { |
| 2321 | nsp32_set_async(data, target); |
| 2322 | nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET); |
| 2323 | } else { |
| 2324 | nsp32_set_sync_entry(data, target, entry, get_offset); |
| 2325 | nsp32_build_sdtr(SCpnt, get_period, get_offset); |
| 2326 | } |
| 2327 | } |
| 2328 | |
| 2329 | target->period = get_period; |
| 2330 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit"); |
| 2331 | return; |
| 2332 | |
| 2333 | reject: |
| 2334 | /* |
| 2335 | * If the current message is unacceptable, send back to the target |
| 2336 | * with reject message. |
| 2337 | */ |
| 2338 | nsp32_build_reject(SCpnt); |
| 2339 | |
| 2340 | async: |
| 2341 | nsp32_set_async(data, target); /* set as ASYNC transfer mode */ |
| 2342 | |
| 2343 | target->period = 0; |
| 2344 | nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async"); |
| 2345 | return; |
| 2346 | } |
| 2347 | |
| 2348 | |
| 2349 | /* |
| 2350 | * Search config entry number matched in sync_table from given |
| 2351 | * target and speed period value. If failed to search, return negative value. |
| 2352 | */ |
| 2353 | static int nsp32_search_period_entry(nsp32_hw_data *data, |
| 2354 | nsp32_target *target, |
| 2355 | unsigned char period) |
| 2356 | { |
| 2357 | int i; |
| 2358 | |
| 2359 | if (target->limit_entry >= data->syncnum) { |
| 2360 | nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!"); |
| 2361 | target->limit_entry = 0; |
| 2362 | } |
| 2363 | |
| 2364 | for (i = target->limit_entry; i < data->syncnum; i++) { |
| 2365 | if (period >= data->synct[i].start_period && |
| 2366 | period <= data->synct[i].end_period) { |
| 2367 | break; |
| 2368 | } |
| 2369 | } |
| 2370 | |
| 2371 | /* |
| 2372 | * Check given period value is over the sync_table value. |
| 2373 | * If so, return max value. |
| 2374 | */ |
| 2375 | if (i == data->syncnum) { |
| 2376 | i = -1; |
| 2377 | } |
| 2378 | |
| 2379 | return i; |
| 2380 | } |
| 2381 | |
| 2382 | |
| 2383 | /* |
| 2384 | * target <-> initiator use ASYNC transfer |
| 2385 | */ |
| 2386 | static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target) |
| 2387 | { |
| 2388 | unsigned char period = data->synct[target->limit_entry].period_num; |
| 2389 | |
| 2390 | target->offset = ASYNC_OFFSET; |
| 2391 | target->period = 0; |
| 2392 | target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET); |
| 2393 | target->ackwidth = 0; |
| 2394 | target->sample_reg = 0; |
| 2395 | |
| 2396 | nsp32_dbg(NSP32_DEBUG_SYNC, "set async"); |
| 2397 | } |
| 2398 | |
| 2399 | |
| 2400 | /* |
| 2401 | * target <-> initiator use maximum SYNC transfer |
| 2402 | */ |
| 2403 | static void nsp32_set_max_sync(nsp32_hw_data *data, |
| 2404 | nsp32_target *target, |
| 2405 | unsigned char *period, |
| 2406 | unsigned char *offset) |
| 2407 | { |
| 2408 | unsigned char period_num, ackwidth; |
| 2409 | |
| 2410 | period_num = data->synct[target->limit_entry].period_num; |
| 2411 | *period = data->synct[target->limit_entry].start_period; |
| 2412 | ackwidth = data->synct[target->limit_entry].ackwidth; |
| 2413 | *offset = SYNC_OFFSET; |
| 2414 | |
| 2415 | target->syncreg = TO_SYNCREG(period_num, *offset); |
| 2416 | target->ackwidth = ackwidth; |
| 2417 | target->offset = *offset; |
| 2418 | target->sample_reg = 0; /* disable SREQ sampling */ |
| 2419 | } |
| 2420 | |
| 2421 | |
| 2422 | /* |
| 2423 | * target <-> initiator use entry number speed |
| 2424 | */ |
| 2425 | static void nsp32_set_sync_entry(nsp32_hw_data *data, |
| 2426 | nsp32_target *target, |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2427 | int entry, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | unsigned char offset) |
| 2429 | { |
| 2430 | unsigned char period, ackwidth, sample_rate; |
| 2431 | |
| 2432 | period = data->synct[entry].period_num; |
| 2433 | ackwidth = data->synct[entry].ackwidth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | sample_rate = data->synct[entry].sample_rate; |
| 2435 | |
| 2436 | target->syncreg = TO_SYNCREG(period, offset); |
| 2437 | target->ackwidth = ackwidth; |
| 2438 | target->offset = offset; |
| 2439 | target->sample_reg = sample_rate | SAMPLING_ENABLE; |
| 2440 | |
| 2441 | nsp32_dbg(NSP32_DEBUG_SYNC, "set sync"); |
| 2442 | } |
| 2443 | |
| 2444 | |
| 2445 | /* |
| 2446 | * It waits until SCSI REQ becomes assertion or negation state. |
| 2447 | * |
| 2448 | * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then |
| 2449 | * connected target responds SCSI REQ negation. We have to wait |
| 2450 | * SCSI REQ becomes negation in order to negate SCSI ACK signal for |
| 2451 | * REQ-ACK handshake. |
| 2452 | */ |
| 2453 | static void nsp32_wait_req(nsp32_hw_data *data, int state) |
| 2454 | { |
| 2455 | unsigned int base = data->BaseAddress; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2456 | int wait_time = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2457 | unsigned char bus, req_bit; |
| 2458 | |
| 2459 | if (!((state == ASSERT) || (state == NEGATE))) { |
| 2460 | nsp32_msg(KERN_ERR, "unknown state designation"); |
| 2461 | } |
| 2462 | /* REQ is BIT(5) */ |
| 2463 | req_bit = (state == ASSERT ? BUSMON_REQ : 0); |
| 2464 | |
| 2465 | do { |
| 2466 | bus = nsp32_read1(base, SCSI_BUS_MONITOR); |
| 2467 | if ((bus & BUSMON_REQ) == req_bit) { |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2468 | nsp32_dbg(NSP32_DEBUG_WAIT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2469 | "wait_time: %d", wait_time); |
| 2470 | return; |
| 2471 | } |
| 2472 | udelay(1); |
| 2473 | wait_time++; |
| 2474 | } while (wait_time < REQSACK_TIMEOUT_TIME); |
| 2475 | |
| 2476 | nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit); |
| 2477 | } |
| 2478 | |
| 2479 | /* |
| 2480 | * It waits until SCSI SACK becomes assertion or negation state. |
| 2481 | */ |
| 2482 | static void nsp32_wait_sack(nsp32_hw_data *data, int state) |
| 2483 | { |
| 2484 | unsigned int base = data->BaseAddress; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2485 | int wait_time = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2486 | unsigned char bus, ack_bit; |
| 2487 | |
| 2488 | if (!((state == ASSERT) || (state == NEGATE))) { |
| 2489 | nsp32_msg(KERN_ERR, "unknown state designation"); |
| 2490 | } |
| 2491 | /* ACK is BIT(4) */ |
| 2492 | ack_bit = (state == ASSERT ? BUSMON_ACK : 0); |
| 2493 | |
| 2494 | do { |
| 2495 | bus = nsp32_read1(base, SCSI_BUS_MONITOR); |
| 2496 | if ((bus & BUSMON_ACK) == ack_bit) { |
| 2497 | nsp32_dbg(NSP32_DEBUG_WAIT, |
| 2498 | "wait_time: %d", wait_time); |
| 2499 | return; |
| 2500 | } |
| 2501 | udelay(1); |
| 2502 | wait_time++; |
| 2503 | } while (wait_time < REQSACK_TIMEOUT_TIME); |
| 2504 | |
| 2505 | nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit); |
| 2506 | } |
| 2507 | |
| 2508 | /* |
| 2509 | * assert SCSI ACK |
| 2510 | * |
| 2511 | * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1. |
| 2512 | */ |
| 2513 | static void nsp32_sack_assert(nsp32_hw_data *data) |
| 2514 | { |
| 2515 | unsigned int base = data->BaseAddress; |
| 2516 | unsigned char busctrl; |
| 2517 | |
| 2518 | busctrl = nsp32_read1(base, SCSI_BUS_CONTROL); |
| 2519 | busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB); |
| 2520 | nsp32_write1(base, SCSI_BUS_CONTROL, busctrl); |
| 2521 | } |
| 2522 | |
| 2523 | /* |
| 2524 | * negate SCSI ACK |
| 2525 | */ |
| 2526 | static void nsp32_sack_negate(nsp32_hw_data *data) |
| 2527 | { |
| 2528 | unsigned int base = data->BaseAddress; |
| 2529 | unsigned char busctrl; |
| 2530 | |
| 2531 | busctrl = nsp32_read1(base, SCSI_BUS_CONTROL); |
| 2532 | busctrl &= ~BUSCTL_ACK; |
| 2533 | nsp32_write1(base, SCSI_BUS_CONTROL, busctrl); |
| 2534 | } |
| 2535 | |
| 2536 | |
| 2537 | |
| 2538 | /* |
| 2539 | * Note: n_io_port is defined as 0x7f because I/O register port is |
| 2540 | * assigned as: |
| 2541 | * 0x800-0x8ff: memory mapped I/O port |
| 2542 | * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly) |
| 2543 | * 0xc00-0xfff: CardBus status registers |
| 2544 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2545 | static int nsp32_detect(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2546 | { |
| 2547 | struct Scsi_Host *host; /* registered host structure */ |
| 2548 | struct resource *res; |
| 2549 | nsp32_hw_data *data; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2550 | int ret; |
| 2551 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2552 | |
| 2553 | nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); |
| 2554 | |
| 2555 | /* |
| 2556 | * register this HBA as SCSI device |
| 2557 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2558 | host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2559 | if (host == NULL) { |
| 2560 | nsp32_msg (KERN_ERR, "failed to scsi register"); |
| 2561 | goto err; |
| 2562 | } |
| 2563 | |
| 2564 | /* |
| 2565 | * set nsp32_hw_data |
| 2566 | */ |
| 2567 | data = (nsp32_hw_data *)host->hostdata; |
| 2568 | |
| 2569 | memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data)); |
| 2570 | |
| 2571 | host->irq = data->IrqNumber; |
| 2572 | host->io_port = data->BaseAddress; |
| 2573 | host->unique_id = data->BaseAddress; |
| 2574 | host->n_io_port = data->NumAddress; |
| 2575 | host->base = (unsigned long)data->MmioAddress; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | |
| 2577 | data->Host = host; |
| 2578 | spin_lock_init(&(data->Lock)); |
| 2579 | |
| 2580 | data->cur_lunt = NULL; |
| 2581 | data->cur_target = NULL; |
| 2582 | |
| 2583 | /* |
| 2584 | * Bus master transfer mode is supported currently. |
| 2585 | */ |
| 2586 | data->trans_method = NSP32_TRANSFER_BUSMASTER; |
| 2587 | |
| 2588 | /* |
| 2589 | * Set clock div, CLOCK_4 (HBA has own external clock, and |
| 2590 | * dividing * 100ns/4). |
| 2591 | * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet. |
| 2592 | */ |
| 2593 | data->clock = CLOCK_4; |
| 2594 | |
| 2595 | /* |
| 2596 | * Select appropriate nsp32_sync_table and set I_CLOCKDIV. |
| 2597 | */ |
| 2598 | switch (data->clock) { |
| 2599 | case CLOCK_4: |
| 2600 | /* If data->clock is CLOCK_4, then select 40M sync table. */ |
| 2601 | data->synct = nsp32_sync_table_40M; |
| 2602 | data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M); |
| 2603 | break; |
| 2604 | case CLOCK_2: |
| 2605 | /* If data->clock is CLOCK_2, then select 20M sync table. */ |
| 2606 | data->synct = nsp32_sync_table_20M; |
| 2607 | data->syncnum = ARRAY_SIZE(nsp32_sync_table_20M); |
| 2608 | break; |
| 2609 | case PCICLK: |
| 2610 | /* If data->clock is PCICLK, then select pci sync table. */ |
| 2611 | data->synct = nsp32_sync_table_pci; |
| 2612 | data->syncnum = ARRAY_SIZE(nsp32_sync_table_pci); |
| 2613 | break; |
| 2614 | default: |
| 2615 | nsp32_msg(KERN_WARNING, |
| 2616 | "Invalid clock div is selected, set CLOCK_4."); |
| 2617 | /* Use default value CLOCK_4 */ |
| 2618 | data->clock = CLOCK_4; |
| 2619 | data->synct = nsp32_sync_table_40M; |
| 2620 | data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M); |
| 2621 | } |
| 2622 | |
| 2623 | /* |
| 2624 | * setup nsp32_lunt |
| 2625 | */ |
| 2626 | |
| 2627 | /* |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2628 | * setup DMA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2629 | */ |
Christoph Hellwig | 03676e1 | 2018-10-10 19:55:59 +0200 | [diff] [blame] | 2630 | if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2631 | nsp32_msg (KERN_ERR, "failed to set PCI DMA mask"); |
| 2632 | goto scsi_unregister; |
| 2633 | } |
| 2634 | |
| 2635 | /* |
| 2636 | * allocate autoparam DMA resource. |
| 2637 | */ |
Christoph Hellwig | 03676e1 | 2018-10-10 19:55:59 +0200 | [diff] [blame] | 2638 | data->autoparam = dma_alloc_coherent(&pdev->dev, |
| 2639 | sizeof(nsp32_autoparam), &(data->auto_paddr), |
| 2640 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2641 | if (data->autoparam == NULL) { |
| 2642 | nsp32_msg(KERN_ERR, "failed to allocate DMA memory"); |
| 2643 | goto scsi_unregister; |
| 2644 | } |
| 2645 | |
| 2646 | /* |
| 2647 | * allocate scatter-gather DMA resource. |
| 2648 | */ |
Christoph Hellwig | 03676e1 | 2018-10-10 19:55:59 +0200 | [diff] [blame] | 2649 | data->sg_list = dma_alloc_coherent(&pdev->dev, NSP32_SG_TABLE_SIZE, |
| 2650 | &data->sg_paddr, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2651 | if (data->sg_list == NULL) { |
| 2652 | nsp32_msg(KERN_ERR, "failed to allocate DMA memory"); |
| 2653 | goto free_autoparam; |
| 2654 | } |
| 2655 | |
| 2656 | for (i = 0; i < ARRAY_SIZE(data->lunt); i++) { |
| 2657 | for (j = 0; j < ARRAY_SIZE(data->lunt[0]); j++) { |
| 2658 | int offset = i * ARRAY_SIZE(data->lunt[0]) + j; |
| 2659 | nsp32_lunt tmp = { |
| 2660 | .SCpnt = NULL, |
| 2661 | .save_datp = 0, |
| 2662 | .msgin03 = FALSE, |
| 2663 | .sg_num = 0, |
| 2664 | .cur_entry = 0, |
| 2665 | .sglun = &(data->sg_list[offset]), |
| 2666 | .sglun_paddr = data->sg_paddr + (offset * sizeof(nsp32_sglun)), |
| 2667 | }; |
| 2668 | |
| 2669 | data->lunt[i][j] = tmp; |
| 2670 | } |
| 2671 | } |
| 2672 | |
| 2673 | /* |
| 2674 | * setup target |
| 2675 | */ |
| 2676 | for (i = 0; i < ARRAY_SIZE(data->target); i++) { |
| 2677 | nsp32_target *target = &(data->target[i]); |
| 2678 | |
| 2679 | target->limit_entry = 0; |
| 2680 | target->sync_flag = 0; |
| 2681 | nsp32_set_async(data, target); |
| 2682 | } |
| 2683 | |
| 2684 | /* |
| 2685 | * EEPROM check |
| 2686 | */ |
| 2687 | ret = nsp32_getprom_param(data); |
| 2688 | if (ret == FALSE) { |
| 2689 | data->resettime = 3; /* default 3 */ |
| 2690 | } |
| 2691 | |
| 2692 | /* |
| 2693 | * setup HBA |
| 2694 | */ |
| 2695 | nsp32hw_init(data); |
| 2696 | |
| 2697 | snprintf(data->info_str, sizeof(data->info_str), |
| 2698 | "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x", |
| 2699 | host->irq, host->io_port, host->n_io_port); |
| 2700 | |
| 2701 | /* |
| 2702 | * SCSI bus reset |
| 2703 | * |
| 2704 | * Note: It's important to reset SCSI bus in initialization phase. |
| 2705 | * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when |
| 2706 | * system is coming up, so SCSI devices connected to HBA is set as |
| 2707 | * un-asynchronous mode. It brings the merit that this HBA is |
| 2708 | * ready to start synchronous transfer without any preparation, |
| 2709 | * but we are difficult to control transfer speed. In addition, |
| 2710 | * it prevents device transfer speed from effecting EEPROM start-up |
| 2711 | * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as |
| 2712 | * Auto Mode, then FAST-10M is selected when SCSI devices are |
| 2713 | * connected same or more than 4 devices. It should be avoided |
| 2714 | * depending on this specification. Thus, resetting the SCSI bus |
| 2715 | * restores all connected SCSI devices to asynchronous mode, then |
| 2716 | * this driver set SDTR safely later, and we can control all SCSI |
| 2717 | * device transfer mode. |
| 2718 | */ |
| 2719 | nsp32_do_bus_reset(data); |
| 2720 | |
James Bottomley | c4e00fa | 2006-07-03 09:41:12 -0500 | [diff] [blame] | 2721 | ret = request_irq(host->irq, do_nsp32_isr, IRQF_SHARED, "nsp32", data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2722 | if (ret < 0) { |
| 2723 | nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 " |
| 2724 | "SCSI PCI controller. Interrupt: %d", host->irq); |
| 2725 | goto free_sg_list; |
| 2726 | } |
| 2727 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2728 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2729 | * PCI IO register |
| 2730 | */ |
| 2731 | res = request_region(host->io_port, host->n_io_port, "nsp32"); |
| 2732 | if (res == NULL) { |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2733 | nsp32_msg(KERN_ERR, |
Lee Jones | 45d59ab | 2021-03-17 09:11:25 +0000 | [diff] [blame] | 2734 | "I/O region 0x%x+0x%x is already used", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2735 | data->BaseAddress, data->NumAddress); |
| 2736 | goto free_irq; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2737 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | |
Adrian Bunk | 6a31a8a | 2007-05-23 14:41:46 -0700 | [diff] [blame] | 2739 | ret = scsi_add_host(host, &pdev->dev); |
GOTO Masanori | 3e7196c | 2006-06-25 01:58:56 -0700 | [diff] [blame] | 2740 | if (ret) { |
| 2741 | nsp32_msg(KERN_ERR, "failed to add scsi host"); |
| 2742 | goto free_region; |
| 2743 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2744 | scsi_scan_host(host); |
Adrian Bunk | 6a31a8a | 2007-05-23 14:41:46 -0700 | [diff] [blame] | 2745 | pci_set_drvdata(pdev, host); |
| 2746 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2747 | |
GOTO Masanori | 3e7196c | 2006-06-25 01:58:56 -0700 | [diff] [blame] | 2748 | free_region: |
| 2749 | release_region(host->io_port, host->n_io_port); |
| 2750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | free_irq: |
| 2752 | free_irq(host->irq, data); |
| 2753 | |
| 2754 | free_sg_list: |
Christoph Hellwig | 03676e1 | 2018-10-10 19:55:59 +0200 | [diff] [blame] | 2755 | dma_free_coherent(&pdev->dev, NSP32_SG_TABLE_SIZE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2756 | data->sg_list, data->sg_paddr); |
| 2757 | |
| 2758 | free_autoparam: |
Christoph Hellwig | 03676e1 | 2018-10-10 19:55:59 +0200 | [diff] [blame] | 2759 | dma_free_coherent(&pdev->dev, sizeof(nsp32_autoparam), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2760 | data->autoparam, data->auto_paddr); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2761 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | scsi_unregister: |
| 2763 | scsi_host_put(host); |
| 2764 | |
| 2765 | err: |
Adrian Bunk | 6a31a8a | 2007-05-23 14:41:46 -0700 | [diff] [blame] | 2766 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2767 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | |
| 2769 | static int nsp32_release(struct Scsi_Host *host) |
| 2770 | { |
| 2771 | nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; |
| 2772 | |
| 2773 | if (data->autoparam) { |
Christoph Hellwig | 03676e1 | 2018-10-10 19:55:59 +0200 | [diff] [blame] | 2774 | dma_free_coherent(&data->Pci->dev, sizeof(nsp32_autoparam), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | data->autoparam, data->auto_paddr); |
| 2776 | } |
| 2777 | |
| 2778 | if (data->sg_list) { |
Christoph Hellwig | 03676e1 | 2018-10-10 19:55:59 +0200 | [diff] [blame] | 2779 | dma_free_coherent(&data->Pci->dev, NSP32_SG_TABLE_SIZE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | data->sg_list, data->sg_paddr); |
| 2781 | } |
| 2782 | |
| 2783 | if (host->irq) { |
| 2784 | free_irq(host->irq, data); |
| 2785 | } |
| 2786 | |
| 2787 | if (host->io_port && host->n_io_port) { |
| 2788 | release_region(host->io_port, host->n_io_port); |
| 2789 | } |
| 2790 | |
| 2791 | if (data->MmioAddress) { |
| 2792 | iounmap(data->MmioAddress); |
| 2793 | } |
| 2794 | |
| 2795 | return 0; |
| 2796 | } |
| 2797 | |
| 2798 | static const char *nsp32_info(struct Scsi_Host *shpnt) |
| 2799 | { |
| 2800 | nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata; |
| 2801 | |
| 2802 | return data->info_str; |
| 2803 | } |
| 2804 | |
| 2805 | |
| 2806 | /**************************************************************************** |
| 2807 | * error handler |
| 2808 | */ |
| 2809 | static int nsp32_eh_abort(struct scsi_cmnd *SCpnt) |
| 2810 | { |
| 2811 | nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; |
| 2812 | unsigned int base = SCpnt->device->host->io_port; |
| 2813 | |
| 2814 | nsp32_msg(KERN_WARNING, "abort"); |
| 2815 | |
| 2816 | if (data->cur_lunt->SCpnt == NULL) { |
| 2817 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed"); |
| 2818 | return FAILED; |
| 2819 | } |
| 2820 | |
| 2821 | if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) { |
| 2822 | /* reset SDTR negotiation */ |
| 2823 | data->cur_target->sync_flag = 0; |
| 2824 | nsp32_set_async(data, data->cur_target); |
| 2825 | } |
| 2826 | |
| 2827 | nsp32_write2(base, TRANSFER_CONTROL, 0); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2828 | nsp32_write2(base, BM_CNT, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2829 | |
| 2830 | SCpnt->result = DID_ABORT << 16; |
| 2831 | nsp32_scsi_done(SCpnt); |
| 2832 | |
| 2833 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success"); |
| 2834 | return SUCCESS; |
| 2835 | } |
| 2836 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | static void nsp32_do_bus_reset(nsp32_hw_data *data) |
| 2838 | { |
| 2839 | unsigned int base = data->BaseAddress; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | int i; |
Lee Jones | 94685e7 | 2021-03-17 09:11:20 +0000 | [diff] [blame] | 2841 | unsigned short __maybe_unused intrdat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2842 | |
| 2843 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "in"); |
| 2844 | |
| 2845 | /* |
| 2846 | * stop all transfer |
| 2847 | * clear TRANSFERCONTROL_BM_START |
| 2848 | * clear counter |
| 2849 | */ |
| 2850 | nsp32_write2(base, TRANSFER_CONTROL, 0); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2851 | nsp32_write4(base, BM_CNT, 0); |
| 2852 | nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2853 | |
| 2854 | /* |
| 2855 | * fall back to asynchronous transfer mode |
| 2856 | * initialize SDTR negotiation flag |
| 2857 | */ |
| 2858 | for (i = 0; i < ARRAY_SIZE(data->target); i++) { |
| 2859 | nsp32_target *target = &data->target[i]; |
| 2860 | |
| 2861 | target->sync_flag = 0; |
| 2862 | nsp32_set_async(data, target); |
| 2863 | } |
| 2864 | |
| 2865 | /* |
| 2866 | * reset SCSI bus |
| 2867 | */ |
| 2868 | nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST); |
Arnd Bergmann | b497ceb | 2013-03-14 15:21:36 +0100 | [diff] [blame] | 2869 | mdelay(RESET_HOLD_TIME / 1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2870 | nsp32_write1(base, SCSI_BUS_CONTROL, 0); |
| 2871 | for(i = 0; i < 5; i++) { |
| 2872 | intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */ |
| 2873 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat); |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2874 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2875 | |
| 2876 | data->CurrentSC = NULL; |
| 2877 | } |
| 2878 | |
| 2879 | static int nsp32_eh_host_reset(struct scsi_cmnd *SCpnt) |
| 2880 | { |
| 2881 | struct Scsi_Host *host = SCpnt->device->host; |
| 2882 | unsigned int base = SCpnt->device->host->io_port; |
| 2883 | nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; |
| 2884 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2885 | nsp32_msg(KERN_INFO, "Host Reset"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2886 | nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt); |
| 2887 | |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 2888 | spin_lock_irq(SCpnt->device->host->host_lock); |
| 2889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | nsp32hw_init(data); |
| 2891 | nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); |
| 2892 | nsp32_do_bus_reset(data); |
| 2893 | nsp32_write2(base, IRQ_CONTROL, 0); |
| 2894 | |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 2895 | spin_unlock_irq(SCpnt->device->host->host_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2896 | return SUCCESS; /* Host reset is succeeded at any time. */ |
| 2897 | } |
| 2898 | |
| 2899 | |
| 2900 | /************************************************************************** |
| 2901 | * EEPROM handler |
| 2902 | */ |
| 2903 | |
| 2904 | /* |
| 2905 | * getting EEPROM parameter |
| 2906 | */ |
| 2907 | static int nsp32_getprom_param(nsp32_hw_data *data) |
| 2908 | { |
| 2909 | int vendor = data->pci_devid->vendor; |
| 2910 | int device = data->pci_devid->device; |
Lee Jones | 94685e7 | 2021-03-17 09:11:20 +0000 | [diff] [blame] | 2911 | int ret, i; |
| 2912 | int __maybe_unused val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | |
| 2914 | /* |
| 2915 | * EEPROM checking. |
| 2916 | */ |
| 2917 | ret = nsp32_prom_read(data, 0x7e); |
| 2918 | if (ret != 0x55) { |
| 2919 | nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret); |
| 2920 | return FALSE; |
| 2921 | } |
| 2922 | ret = nsp32_prom_read(data, 0x7f); |
| 2923 | if (ret != 0xaa) { |
| 2924 | nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret); |
| 2925 | return FALSE; |
| 2926 | } |
| 2927 | |
| 2928 | /* |
| 2929 | * check EEPROM type |
| 2930 | */ |
| 2931 | if (vendor == PCI_VENDOR_ID_WORKBIT && |
| 2932 | device == PCI_DEVICE_ID_WORKBIT_STANDARD) { |
| 2933 | ret = nsp32_getprom_c16(data); |
| 2934 | } else if (vendor == PCI_VENDOR_ID_WORKBIT && |
| 2935 | device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) { |
| 2936 | ret = nsp32_getprom_at24(data); |
| 2937 | } else if (vendor == PCI_VENDOR_ID_WORKBIT && |
| 2938 | device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) { |
| 2939 | ret = nsp32_getprom_at24(data); |
| 2940 | } else { |
| 2941 | nsp32_msg(KERN_WARNING, "Unknown EEPROM"); |
| 2942 | ret = FALSE; |
| 2943 | } |
| 2944 | |
| 2945 | /* for debug : SPROM data full checking */ |
| 2946 | for (i = 0; i <= 0x1f; i++) { |
| 2947 | val = nsp32_prom_read(data, i); |
| 2948 | nsp32_dbg(NSP32_DEBUG_EEPROM, |
| 2949 | "rom address 0x%x : 0x%x", i, val); |
| 2950 | } |
| 2951 | |
| 2952 | return ret; |
| 2953 | } |
| 2954 | |
| 2955 | |
| 2956 | /* |
| 2957 | * AT24C01A (Logitec: LHA-600S), AT24C02 (Melco Buffalo: IFC-USLP) data map: |
| 2958 | * |
| 2959 | * ROMADDR |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2960 | * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2961 | * Value 0x0: ASYNC, 0x0c: Ultra-20M, 0x19: Fast-10M |
| 2962 | * 0x07 : HBA Synchronous Transfer Period |
| 2963 | * Value 0: AutoSync, 1: Manual Setting |
| 2964 | * 0x08 - 0x0f : Not Used? (0x0) |
| 2965 | * 0x10 : Bus Termination |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2966 | * Value 0: Auto[ON], 1: ON, 2: OFF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2967 | * 0x11 : Not Used? (0) |
| 2968 | * 0x12 : Bus Reset Delay Time (0x03) |
| 2969 | * 0x13 : Bootable CD Support |
| 2970 | * Value 0: Disable, 1: Enable |
| 2971 | * 0x14 : Device Scan |
| 2972 | * Bit 7 6 5 4 3 2 1 0 |
| 2973 | * | <-----------------> |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2974 | * | SCSI ID: Value 0: Skip, 1: YES |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2975 | * |-> Value 0: ALL scan, Value 1: Manual |
| 2976 | * 0x15 - 0x1b : Not Used? (0) |
| 2977 | * 0x1c : Constant? (0x01) (clock div?) |
| 2978 | * 0x1d - 0x7c : Not Used (0xff) |
| 2979 | * 0x7d : Not Used? (0xff) |
| 2980 | * 0x7e : Constant (0x55), Validity signature |
| 2981 | * 0x7f : Constant (0xaa), Validity signature |
| 2982 | */ |
| 2983 | static int nsp32_getprom_at24(nsp32_hw_data *data) |
| 2984 | { |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2985 | int ret, i; |
| 2986 | int auto_sync; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2987 | nsp32_target *target; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 2988 | int entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2989 | |
| 2990 | /* |
| 2991 | * Reset time which is designated by EEPROM. |
| 2992 | * |
| 2993 | * TODO: Not used yet. |
| 2994 | */ |
| 2995 | data->resettime = nsp32_prom_read(data, 0x12); |
| 2996 | |
| 2997 | /* |
| 2998 | * HBA Synchronous Transfer Period |
| 2999 | * |
| 3000 | * Note: auto_sync = 0: auto, 1: manual. Ninja SCSI HBA spec says |
| 3001 | * that if auto_sync is 0 (auto), and connected SCSI devices are |
| 3002 | * same or lower than 3, then transfer speed is set as ULTRA-20M. |
| 3003 | * On the contrary if connected SCSI devices are same or higher |
| 3004 | * than 4, then transfer speed is set as FAST-10M. |
| 3005 | * |
| 3006 | * I break this rule. The number of connected SCSI devices are |
| 3007 | * only ignored. If auto_sync is 0 (auto), then transfer speed is |
| 3008 | * forced as ULTRA-20M. |
| 3009 | */ |
| 3010 | ret = nsp32_prom_read(data, 0x07); |
| 3011 | switch (ret) { |
| 3012 | case 0: |
| 3013 | auto_sync = TRUE; |
| 3014 | break; |
| 3015 | case 1: |
| 3016 | auto_sync = FALSE; |
| 3017 | break; |
| 3018 | default: |
| 3019 | nsp32_msg(KERN_WARNING, |
| 3020 | "Unsupported Auto Sync mode. Fall back to manual mode."); |
| 3021 | auto_sync = TRUE; |
| 3022 | } |
| 3023 | |
| 3024 | if (trans_mode == ULTRA20M_MODE) { |
| 3025 | auto_sync = TRUE; |
| 3026 | } |
| 3027 | |
| 3028 | /* |
| 3029 | * each device Synchronous Transfer Period |
| 3030 | */ |
| 3031 | for (i = 0; i < NSP32_HOST_SCSIID; i++) { |
| 3032 | target = &data->target[i]; |
| 3033 | if (auto_sync == TRUE) { |
| 3034 | target->limit_entry = 0; /* set as ULTRA20M */ |
| 3035 | } else { |
| 3036 | ret = nsp32_prom_read(data, i); |
| 3037 | entry = nsp32_search_period_entry(data, target, ret); |
| 3038 | if (entry < 0) { |
| 3039 | /* search failed... set maximum speed */ |
| 3040 | entry = 0; |
| 3041 | } |
| 3042 | target->limit_entry = entry; |
| 3043 | } |
| 3044 | } |
| 3045 | |
| 3046 | return TRUE; |
| 3047 | } |
| 3048 | |
| 3049 | |
| 3050 | /* |
| 3051 | * C16 110 (I-O Data: SC-NBD) data map: |
| 3052 | * |
| 3053 | * ROMADDR |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3054 | * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | * Value 0x0: 20MB/S, 0x1: 10MB/S, 0x2: 5MB/S, 0x3: ASYNC |
| 3056 | * 0x07 : 0 (HBA Synchronous Transfer Period: Auto Sync) |
| 3057 | * 0x08 - 0x0f : Not Used? (0x0) |
| 3058 | * 0x10 : Transfer Mode |
| 3059 | * Value 0: PIO, 1: Busmater |
| 3060 | * 0x11 : Bus Reset Delay Time (0x00-0x20) |
| 3061 | * 0x12 : Bus Termination |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3062 | * Value 0: Disable, 1: Enable |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3063 | * 0x13 - 0x19 : Disconnection |
| 3064 | * Value 0: Disable, 1: Enable |
| 3065 | * 0x1a - 0x7c : Not Used? (0) |
| 3066 | * 0x7d : Not Used? (0xf8) |
| 3067 | * 0x7e : Constant (0x55), Validity signature |
| 3068 | * 0x7f : Constant (0xaa), Validity signature |
| 3069 | */ |
| 3070 | static int nsp32_getprom_c16(nsp32_hw_data *data) |
| 3071 | { |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3072 | int ret, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3073 | nsp32_target *target; |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3074 | int entry, val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3075 | |
| 3076 | /* |
| 3077 | * Reset time which is designated by EEPROM. |
| 3078 | * |
| 3079 | * TODO: Not used yet. |
| 3080 | */ |
| 3081 | data->resettime = nsp32_prom_read(data, 0x11); |
| 3082 | |
| 3083 | /* |
| 3084 | * each device Synchronous Transfer Period |
| 3085 | */ |
| 3086 | for (i = 0; i < NSP32_HOST_SCSIID; i++) { |
| 3087 | target = &data->target[i]; |
| 3088 | ret = nsp32_prom_read(data, i); |
| 3089 | switch (ret) { |
| 3090 | case 0: /* 20MB/s */ |
| 3091 | val = 0x0c; |
| 3092 | break; |
| 3093 | case 1: /* 10MB/s */ |
| 3094 | val = 0x19; |
| 3095 | break; |
| 3096 | case 2: /* 5MB/s */ |
| 3097 | val = 0x32; |
| 3098 | break; |
| 3099 | case 3: /* ASYNC */ |
| 3100 | val = 0x00; |
| 3101 | break; |
| 3102 | default: /* default 20MB/s */ |
| 3103 | val = 0x0c; |
| 3104 | break; |
| 3105 | } |
| 3106 | entry = nsp32_search_period_entry(data, target, val); |
| 3107 | if (entry < 0 || trans_mode == ULTRA20M_MODE) { |
| 3108 | /* search failed... set maximum speed */ |
| 3109 | entry = 0; |
| 3110 | } |
| 3111 | target->limit_entry = entry; |
| 3112 | } |
| 3113 | |
| 3114 | return TRUE; |
| 3115 | } |
| 3116 | |
| 3117 | |
| 3118 | /* |
| 3119 | * Atmel AT24C01A (drived in 5V) serial EEPROM routines |
| 3120 | */ |
| 3121 | static int nsp32_prom_read(nsp32_hw_data *data, int romaddr) |
| 3122 | { |
| 3123 | int i, val; |
| 3124 | |
| 3125 | /* start condition */ |
| 3126 | nsp32_prom_start(data); |
| 3127 | |
| 3128 | /* device address */ |
| 3129 | nsp32_prom_write_bit(data, 1); /* 1 */ |
| 3130 | nsp32_prom_write_bit(data, 0); /* 0 */ |
| 3131 | nsp32_prom_write_bit(data, 1); /* 1 */ |
| 3132 | nsp32_prom_write_bit(data, 0); /* 0 */ |
| 3133 | nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */ |
| 3134 | nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */ |
| 3135 | nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */ |
| 3136 | |
| 3137 | /* R/W: W for dummy write */ |
| 3138 | nsp32_prom_write_bit(data, 0); |
| 3139 | |
| 3140 | /* ack */ |
| 3141 | nsp32_prom_write_bit(data, 0); |
| 3142 | |
| 3143 | /* word address */ |
| 3144 | for (i = 7; i >= 0; i--) { |
| 3145 | nsp32_prom_write_bit(data, ((romaddr >> i) & 1)); |
| 3146 | } |
| 3147 | |
| 3148 | /* ack */ |
| 3149 | nsp32_prom_write_bit(data, 0); |
| 3150 | |
| 3151 | /* start condition */ |
| 3152 | nsp32_prom_start(data); |
| 3153 | |
| 3154 | /* device address */ |
| 3155 | nsp32_prom_write_bit(data, 1); /* 1 */ |
| 3156 | nsp32_prom_write_bit(data, 0); /* 0 */ |
| 3157 | nsp32_prom_write_bit(data, 1); /* 1 */ |
| 3158 | nsp32_prom_write_bit(data, 0); /* 0 */ |
| 3159 | nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */ |
| 3160 | nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */ |
| 3161 | nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */ |
| 3162 | |
| 3163 | /* R/W: R */ |
| 3164 | nsp32_prom_write_bit(data, 1); |
| 3165 | |
| 3166 | /* ack */ |
| 3167 | nsp32_prom_write_bit(data, 0); |
| 3168 | |
| 3169 | /* data... */ |
| 3170 | val = 0; |
| 3171 | for (i = 7; i >= 0; i--) { |
| 3172 | val += (nsp32_prom_read_bit(data) << i); |
| 3173 | } |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3175 | /* no ack */ |
| 3176 | nsp32_prom_write_bit(data, 1); |
| 3177 | |
| 3178 | /* stop condition */ |
| 3179 | nsp32_prom_stop(data); |
| 3180 | |
| 3181 | return val; |
| 3182 | } |
| 3183 | |
| 3184 | static void nsp32_prom_set(nsp32_hw_data *data, int bit, int val) |
| 3185 | { |
| 3186 | int base = data->BaseAddress; |
| 3187 | int tmp; |
| 3188 | |
| 3189 | tmp = nsp32_index_read1(base, SERIAL_ROM_CTL); |
| 3190 | |
| 3191 | if (val == 0) { |
| 3192 | tmp &= ~bit; |
| 3193 | } else { |
| 3194 | tmp |= bit; |
| 3195 | } |
| 3196 | |
| 3197 | nsp32_index_write1(base, SERIAL_ROM_CTL, tmp); |
| 3198 | |
| 3199 | udelay(10); |
| 3200 | } |
| 3201 | |
| 3202 | static int nsp32_prom_get(nsp32_hw_data *data, int bit) |
| 3203 | { |
| 3204 | int base = data->BaseAddress; |
| 3205 | int tmp, ret; |
| 3206 | |
| 3207 | if (bit != SDA) { |
| 3208 | nsp32_msg(KERN_ERR, "return value is not appropriate"); |
| 3209 | return 0; |
| 3210 | } |
| 3211 | |
| 3212 | |
| 3213 | tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit; |
| 3214 | |
| 3215 | if (tmp == 0) { |
| 3216 | ret = 0; |
| 3217 | } else { |
| 3218 | ret = 1; |
| 3219 | } |
| 3220 | |
| 3221 | udelay(10); |
| 3222 | |
| 3223 | return ret; |
| 3224 | } |
| 3225 | |
| 3226 | static void nsp32_prom_start (nsp32_hw_data *data) |
| 3227 | { |
| 3228 | /* start condition */ |
| 3229 | nsp32_prom_set(data, SCL, 1); |
| 3230 | nsp32_prom_set(data, SDA, 1); |
| 3231 | nsp32_prom_set(data, ENA, 1); /* output mode */ |
| 3232 | nsp32_prom_set(data, SDA, 0); /* keeping SCL=1 and transiting |
| 3233 | * SDA 1->0 is start condition */ |
| 3234 | nsp32_prom_set(data, SCL, 0); |
| 3235 | } |
| 3236 | |
| 3237 | static void nsp32_prom_stop (nsp32_hw_data *data) |
| 3238 | { |
| 3239 | /* stop condition */ |
| 3240 | nsp32_prom_set(data, SCL, 1); |
| 3241 | nsp32_prom_set(data, SDA, 0); |
| 3242 | nsp32_prom_set(data, ENA, 1); /* output mode */ |
| 3243 | nsp32_prom_set(data, SDA, 1); |
| 3244 | nsp32_prom_set(data, SCL, 0); |
| 3245 | } |
| 3246 | |
| 3247 | static void nsp32_prom_write_bit(nsp32_hw_data *data, int val) |
| 3248 | { |
| 3249 | /* write */ |
| 3250 | nsp32_prom_set(data, SDA, val); |
| 3251 | nsp32_prom_set(data, SCL, 1 ); |
| 3252 | nsp32_prom_set(data, SCL, 0 ); |
| 3253 | } |
| 3254 | |
| 3255 | static int nsp32_prom_read_bit(nsp32_hw_data *data) |
| 3256 | { |
| 3257 | int val; |
| 3258 | |
| 3259 | /* read */ |
| 3260 | nsp32_prom_set(data, ENA, 0); /* input mode */ |
| 3261 | nsp32_prom_set(data, SCL, 1); |
| 3262 | |
| 3263 | val = nsp32_prom_get(data, SDA); |
| 3264 | |
| 3265 | nsp32_prom_set(data, SCL, 0); |
| 3266 | nsp32_prom_set(data, ENA, 1); /* output mode */ |
| 3267 | |
| 3268 | return val; |
| 3269 | } |
| 3270 | |
| 3271 | |
| 3272 | /************************************************************************** |
| 3273 | * Power Management |
| 3274 | */ |
| 3275 | #ifdef CONFIG_PM |
| 3276 | |
| 3277 | /* Device suspended */ |
Pavel Machek | e5378ca | 2005-04-16 15:25:29 -0700 | [diff] [blame] | 3278 | static int nsp32_suspend(struct pci_dev *pdev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3279 | { |
| 3280 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
| 3281 | |
Lee Jones | 45d59ab | 2021-03-17 09:11:25 +0000 | [diff] [blame] | 3282 | nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state.event=%x, slot=%s, host=0x%p", |
| 3283 | pdev, state.event, pci_name(pdev), host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3284 | |
| 3285 | pci_save_state (pdev); |
| 3286 | pci_disable_device (pdev); |
Pavel Machek | e5378ca | 2005-04-16 15:25:29 -0700 | [diff] [blame] | 3287 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3288 | |
| 3289 | return 0; |
| 3290 | } |
| 3291 | |
| 3292 | /* Device woken up */ |
| 3293 | static int nsp32_resume(struct pci_dev *pdev) |
| 3294 | { |
| 3295 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
| 3296 | nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; |
| 3297 | unsigned short reg; |
| 3298 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3299 | nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p", |
| 3300 | pdev, pci_name(pdev), host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3301 | |
Pavel Machek | e5378ca | 2005-04-16 15:25:29 -0700 | [diff] [blame] | 3302 | pci_set_power_state(pdev, PCI_D0); |
| 3303 | pci_enable_wake (pdev, PCI_D0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3304 | pci_restore_state (pdev); |
| 3305 | |
| 3306 | reg = nsp32_read2(data->BaseAddress, INDEX_REG); |
| 3307 | |
| 3308 | nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg); |
| 3309 | |
| 3310 | if (reg == 0xffff) { |
| 3311 | nsp32_msg(KERN_INFO, "missing device. abort resume."); |
| 3312 | return 0; |
| 3313 | } |
| 3314 | |
| 3315 | nsp32hw_init (data); |
| 3316 | nsp32_do_bus_reset(data); |
| 3317 | |
| 3318 | nsp32_msg(KERN_INFO, "resume success"); |
| 3319 | |
| 3320 | return 0; |
| 3321 | } |
| 3322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3323 | #endif |
| 3324 | |
| 3325 | /************************************************************************ |
| 3326 | * PCI/Cardbus probe/remove routine |
| 3327 | */ |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 3328 | static int nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3329 | { |
| 3330 | int ret; |
| 3331 | nsp32_hw_data *data = &nsp32_data_base; |
| 3332 | |
| 3333 | nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); |
| 3334 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3335 | ret = pci_enable_device(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3336 | if (ret) { |
| 3337 | nsp32_msg(KERN_ERR, "failed to enable pci device"); |
| 3338 | return ret; |
| 3339 | } |
| 3340 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3341 | data->Pci = pdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3342 | data->pci_devid = id; |
| 3343 | data->IrqNumber = pdev->irq; |
| 3344 | data->BaseAddress = pci_resource_start(pdev, 0); |
| 3345 | data->NumAddress = pci_resource_len (pdev, 0); |
Arjan van de Ven | 25729a7 | 2008-09-28 16:18:02 -0700 | [diff] [blame] | 3346 | data->MmioAddress = pci_ioremap_bar(pdev, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3347 | data->MmioLength = pci_resource_len (pdev, 1); |
| 3348 | |
| 3349 | pci_set_master(pdev); |
| 3350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3351 | ret = nsp32_detect(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3352 | |
| 3353 | nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s", |
| 3354 | pdev->irq, |
| 3355 | data->MmioAddress, data->MmioLength, |
| 3356 | pci_name(pdev), |
| 3357 | nsp32_model[id->driver_data]); |
| 3358 | |
| 3359 | nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret); |
| 3360 | |
| 3361 | return ret; |
| 3362 | } |
| 3363 | |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 3364 | static void nsp32_remove(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3365 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3366 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3367 | |
| 3368 | nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); |
| 3369 | |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3370 | scsi_remove_host(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3371 | |
| 3372 | nsp32_release(host); |
| 3373 | |
| 3374 | scsi_host_put(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3375 | } |
| 3376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3377 | static struct pci_driver nsp32_driver = { |
| 3378 | .name = "nsp32", |
| 3379 | .id_table = nsp32_pci_table, |
| 3380 | .probe = nsp32_probe, |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 3381 | .remove = nsp32_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3382 | #ifdef CONFIG_PM |
Hannes Reinecke | 7e2bc6d | 2021-04-27 10:30:29 +0200 | [diff] [blame] | 3383 | .suspend = nsp32_suspend, |
| 3384 | .resume = nsp32_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3385 | #endif |
| 3386 | }; |
| 3387 | |
| 3388 | /********************************************************************* |
| 3389 | * Moule entry point |
| 3390 | */ |
| 3391 | static int __init init_nsp32(void) { |
| 3392 | nsp32_msg(KERN_INFO, "loading..."); |
Henrik Kretzschmar | dcbccbde | 2006-09-25 16:58:58 -0700 | [diff] [blame] | 3393 | return pci_register_driver(&nsp32_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3394 | } |
| 3395 | |
| 3396 | static void __exit exit_nsp32(void) { |
| 3397 | nsp32_msg(KERN_INFO, "unloading..."); |
| 3398 | pci_unregister_driver(&nsp32_driver); |
| 3399 | } |
| 3400 | |
| 3401 | module_init(init_nsp32); |
| 3402 | module_exit(exit_nsp32); |
| 3403 | |
| 3404 | /* end */ |